ci(changelog): add deprecation commits to changelog automation

CONTRIBUTING.md

@@ -236,6 +236,7 @@ Contributions must adhere to **one** of the following conventions:
 - **`refactor`**: A change that neither fixes a bug or adds a feature 🔁
 - **`revert`**: Reverts a previous commit ↪️
 - **`test`**: Improves test coverage in updating a test or adding a new, or missing test 🧪
+- **`deprecate`**: Documentation only changes for a deprecation 👎
 
 ### Scope of change
 

release-please-config.json

@@ -4,6 +4,20 @@
   "tag-separator": "@",
   "draft-pull-request": true,
   "include-v-in-tag": false,
+  "changelog-sections": [
+    { "type": "feat", "section": "Features" },
+    { "type": "fix", "section": "Bug Fixes" },
+    { "type": "perf", "section": "Performance Improvements" },
+    { "type": "revert", "section": "Reverts", "hidden": true },
+    { "type": "deprecate", "section": "Deprecations" },
+    { "type": "docs", "section": "Documentation", "hidden": true },
+    { "type": "style", "section": "Styles", "hidden": true },
+    { "type": "chore", "section": "Miscellaneous Chores", "hidden": true },
+    { "type": "refactor", "section": "Code Refactoring", "hidden": true },
+    { "type": "test", "section": "Tests", "hidden": true },
+    { "type": "build", "section": "Build System", "hidden": true },
+    { "type": "ci", "section": "Continuous Integration", "hidden": true }
+  ],
   "packages": {
     "packages/calcite-components": {
       "component": "@esri/calcite-components",