Use spring-io/github-changelog-generator

This commit replaces downloading and running the github-changelog-generator jar
with its corresponding GitHub Action. It also pulls out the change log
configuration into a file committed separating from the workflow steps
and favors SHA hashes for the version numbers.

Signed-off-by: Josh Cummings <3627351+jzheaux@users.noreply.github.com>

Author: jzheaux

.github/actions/create-release-notes/action.yml

@@ -0,0 +1,25 @@
+name: Create Release Notes
+description: 'Create the release notes for a given milestone'
+inputs:
+  milestone:
+    description: 'Name of the GitHub milestone for which release notes will be created'
+    required: true
+  token:
+    description: 'Token to use for authentication with GitHub'
+    required: true
+runs:
+  using: composite
+  steps:
+    - name: Set up JDK 25
+      uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5.2.0
+      with:
+        java-version: '25'
+        distribution: 'temurin'
+    - name: Generate release notes
+      uses: spring-io/github-changelog-generator@c247eb874a8bbc2c7b91ed7227d8eb66eb639d38 # v0.0.13
+      with:
+        milestone: ${{ inputs.milestone }}
+        token: ${{ inputs.token }}
+    - name: Print release notes
+      shell: bash
+      run: cat changelog.md

.github/actions/create-release-notes/application.yml

@@ -0,0 +1,13 @@
+changelog:
+  repository: spring-projects/spring-batch
+  sections:
+    - title: ":star: New features"
+      labels: [ "type: feature" ]
+    - title: ":rocket: Enhancements"
+      labels: [ "type: enhancement" ]
+    - title: ":lady_beetle: Bug fixes"
+      labels: [ "type: bug" ]
+    - title: ":notebook_with_decorative_cover: Documentation"
+      labels: [ "in: documentation" ]
+    - title: ":hammer: Tasks"
+      labels: [ "type: task" ]

.github/workflows/release-notes-generation.yml

@@ -6,49 +6,16 @@ on:
       milestoneNumber:
         description: "Milestone title"
         required: true
-      generatorVersion:
-        description: "Changelog Generator version"
-        required: true
 
 jobs:
-  build:
+  generate-release-notes:
     name: Generate release notes
     runs-on: ubuntu-latest
     steps:
-      - name: Capture milestone number and generator version
-        run: |
-          echo MILESTONE_NUMBER=${{ github.event.inputs.milestoneNumber }} >> $GITHUB_ENV
-          echo GENERATOR_VERSION=${{ github.event.inputs.generatorVersion }} >> $GITHUB_ENV
-
-      - name: Download changelog generator
-        run: wget https://github.com/spring-io/github-changelog-generator/releases/download/v$GENERATOR_VERSION/github-changelog-generator.jar
-
-      - name: Set up JDK 25
-        uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5.2.0
-        with:
-          java-version: '25'
-          distribution: 'temurin'
-
-      - name: Prepare configuration file
-        run: |
-          cat << EOF > application.yml
-          changelog:
-            repository: spring-projects/spring-batch
-            sections:
-              - title: ":star: New features"
-                labels: [ "type: feature" ]
-              - title: ":rocket: Enhancements"
-                labels: [ "type: enhancement" ]
-              - title: ":lady_beetle: Bug fixes"
-                labels: [ "type: bug" ]
-              - title: ":notebook_with_decorative_cover: Documentation"
-                labels: [ "in: documentation" ]
-              - title: ":hammer: Tasks"
-                labels: [ "type: task" ]
-          EOF
-
+      - name: Check Out Code
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - name: Generate release notes
-        run: java -jar github-changelog-generator.jar $MILESTONE_NUMBER release-notes.md
-
-      - name: Print release notes
-        run: cat release-notes.md
+        uses: ./.github/actions/create-release-notes
+        with:
+          milestone: ${{ inputs.milestoneNumber }}
+          token: ${{ secrets.GH_ACTIONS_REPO_TOKEN }}