(chore)Fix the token expiry and move release version update code to a…

… composite action (red-hat-data-services#1132)

Token expiry fix:
The installation token generated through the GH app has a validity of 1 hour.
ref: https://docs.github.com/en/apps/creating-github-apps/authenticating-with-a-github-app/generating-an-installation-access-token-for-a-github-app
So the issue is, when waiting for e2e tests(github checks) which runs for more than 1 hr to finish, the token gets expired and then the gh action is no longer
able to do other tasks(such as creating a pr)
In order to fix this, we can use the GITHUB_TOKEN that is generated for each workflow.
ref: https://docs.github.com/en/actions/security-guides/automatic-token-authentication#about-the-github_token-secret
The GITHUB_TOKEN expires when a job finishes or after a maximum of 24 hours.

Move version update to composite action:
There are 2 sets of steps in the job that does almost the same task. Instead of duplicating the steps, move it to a composite action and reuse the same.

.github/actions/update-release-version/action.yaml

@@ -0,0 +1,50 @@
+name: "Update release versions and create pr"
+description: "Update versions in the manifests/makefile and create a pr"
+inputs:
+  version:
+    description: 'The release version'
+    required: true
+  token:
+    description: "GH token with required rights to create pr"
+    required: true
+  commit-message:
+    description: "Commit message for the pr"
+    required: true
+  title:
+    description: "Title for the pr"
+    required: true
+  branch-name:
+    description: "Temporary branch to host the changes"
+    required: true
+outputs:
+  pull-request-number:
+    description: "Number of the pull request created"
+    value: ${{ steps.cpr.outputs.pull-request-number }}
+runs:
+  using: "composite"
+  steps:
+    - name: Update versions in relevant files
+      shell: bash
+      run: ./.github/scripts/update-versions.sh ${{ inputs.version }}
+    - name: Run make manifests & bundle
+      shell: bash
+      run: make manifests bundle
+    - name: Clean up
+      shell: bash
+      run: |
+        sed -i -e "s|image: quay.io/opendatahub/opendatahub-operator:latest.*|image: REPLACE_IMAGE:latest|g" bundle/manifests/opendatahub-operator.clusterserviceversion.yaml
+        rm ./config/manager/kustomization.yaml
+    - name: Create pr
+      id: cpr
+      uses: peter-evans/create-pull-request@v6
+      with:
+        token: ${{ inputs.token }}
+        commit-message: ${{ inputs.commit-message }}
+        branch: ${{ inputs.branch-name }}
+        delete-branch: true
+        title: ${{ inputs.title }}
+        reviewers: "VaishnaviHire,zdtsw"
+    - name: Set pr number in output
+      shell: bash
+      run: |
+        echo "pull-request-number=${{ steps.cpr.outputs.pull-request-number }}" >> "$GITHUB_OUTPUT"