ci(.github/): update ci configs to match go-fastly and cli (#925)

* ci(.github/): update ci configs to match go-fastly and cli

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,24 @@
+ All Submissions:
+
+* [ ] Have you followed the guidelines in our Contributing document?
+* [ ] Have you checked to ensure there aren't other open [Pull Requests](https://github.com/fastly/go-fastly/pulls) for the same update/change?
+
+<!-- You can erase any parts of this template not applicable to your Pull Request. -->
+
+### New Feature Submissions:
+
+* [ ] Does your submission pass tests?
+
+### Changes to Core Features:
+
+* [ ] Have you added an explanation of what your changes do and why you'd like us to include them?
+* [ ] Have you written new tests for your core changes, as applicable?
+* [ ] Have you successfully run tests with your changes locally?
+
+### User Impact
+
+* [ ] What is the user impact of this change?
+
+### Are there any considerations that need to be addressed for release?
+
+<!-- Any breaking changes, etc -->

.github/workflows/dependabot_changelog_update.yml

@@ -0,0 +1,23 @@
+name: 'pull-request'
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+      - ready_for_review
+      - labeled
+      - unlabeled
+jobs:
+  changelog:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dangoslen/dependabot-changelog-helper@v3
+        with:
+          activationLabels: dependencies
+          changelogPath: './CHANGELOG.md'
+          entryPrefix: 'build(deps): '
+      - uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: "docs(CHANGELOG.md): add dependency bump from dependabot"

.github/workflows/pr.yml

@@ -13,13 +13,6 @@ jobs:
       uses: actions/setup-go@v5
       with:
         go-version: 1.22.x
-    - name: Restore cache
-      uses: actions/cache@v3
-      with:
-        path: ~/go/pkg/mod
-        key: ${{ runner.os }}-go-mod-${{ hashFiles('**/go.sum') }}
-        restore-keys: |
-          ${{ runner.os }}-go-mod-
     - name: Fmt
       run: make fmt
     - name: Vet
@@ -39,15 +32,12 @@ jobs:
       uses: actions/setup-go@v5
       with:
         go-version: ${{ matrix.go-version }}
-    - name: Restore cache
-      uses: actions/cache@v3
-      with:
-        path: ~/go/pkg/mod
-        key: ${{ runner.os }}-go-mod-${{ hashFiles('**/go.sum') }}
-        restore-keys: |
-          ${{ runner.os }}-go-mod-
     - name: Test
       run: make test
+  changelog:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: dangoslen/changelog-enforcer@v3
   docs:
     runs-on: ubuntu-latest
     steps:
@@ -65,9 +55,7 @@ jobs:
     - name: Check diff
       run: |
         git diff --exit-code --ignore-all-space ./docs/
-
   # NOTE: The following two `validate-` jobs (and the top-of-file config) are inspired by: https://github.com/imjohnbo/ok-to-test
-
   # Branch-based pull request from owner or trusted developer who has WRITE access.
   validate-interface-trusted:
     if: "!contains(github.event.pull_request.labels.*.name, 'breaking-change') && github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository"
@@ -79,13 +67,6 @@ jobs:
       uses: actions/setup-go@v5
       with:
         go-version: 1.22.x
-    - name: Restore cache
-      uses: actions/cache@v3
-      with:
-        path: ~/go/pkg/mod
-        key: ${{ runner.os }}-go-mod-${{ hashFiles('**/go.sum') }}
-        restore-keys: |
-          ${{ runner.os }}-go-mod-
     - name: Install Terraform CLI
       uses: hashicorp/setup-terraform@v3
     - name: Validate Interface
@@ -95,7 +76,6 @@ jobs:
         # IMPORTANT: Workflows from forks do not have access to sensitive data such as secrets
         # https://bit.ly/gh-actions-fork-secret-access
         # We work around this using ./ok-to-test.yml
-
   check-inputs:
     runs-on: ubuntu-latest
     steps:
@@ -107,7 +87,6 @@ jobs:
           echo 'github.event.client_payload.pull_request.head.sha: ${{ github.event.client_payload.pull_request.head.sha }}'
           echo 'github.event.client_payload.slash_command.args.named.sha: ${{ github.event.client_payload.slash_command.args.named.sha }}'
           echo 'github.event.client_payload.pull_request.number: ${{ github.event.client_payload.pull_request.number }}'
-
   # Repo owner has commented /ok-to-test on a (fork-based) pull request
   # This will run the build not as the forked owner but as your own token user.
   validate-interface-fork:
@@ -129,13 +108,6 @@ jobs:
         uses: actions/setup-go@v5
         with:
           go-version: 1.22.x
-      - name: Restore cache
-        uses: actions/cache@v3
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-go-mod-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-mod-
       - name: Install Terraform CLI
         uses: hashicorp/setup-terraform@v3
       - name: Validate Interface
@@ -178,7 +150,6 @@ jobs:
             });
 
             return result;
-
   validate-goreleaser:
     runs-on: ubuntu-latest
     steps:
@@ -188,13 +159,6 @@ jobs:
         uses: actions/setup-go@v5
         with:
           go-version: 1.22.x
-      - name: Restore cache
-        uses: actions/cache@v3
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-go-mod-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-mod-
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v5
         with: