Refactor Github Action per b/485167538 (#89)

Co-authored-by: Ben Knutson <benknutson@google.com>

Author: google-admin

.github/workflows/release-cherry-pick.yml

@@ -30,8 +30,10 @@ jobs:
 
       - name: Cherry-pick commit
         run: |
-          echo "Cherry-picking ${{ inputs.commit_sha }} to release/candidate"
-          git cherry-pick ${{ inputs.commit_sha }}
+          echo "Cherry-picking ${INPUTS_COMMIT_SHA} to release/candidate"
+          git cherry-pick ${INPUTS_COMMIT_SHA}
+        env:
+          INPUTS_COMMIT_SHA: ${{ inputs.commit_sha }}
 
       - name: Push changes
         run: |

.github/workflows/release-finalize.yml

@@ -68,9 +68,11 @@ jobs:
       - name: Rename release/candidate to release/v{version}
         if: steps.check.outputs.is_release_pr == 'true'
         run: |
-          VERSION="v${{ steps.version.outputs.version }}"
+          VERSION="v${STEPS_VERSION_OUTPUTS_VERSION}"
           git push origin "release/candidate:refs/heads/release/$VERSION" ":release/candidate"
           echo "Renamed release/candidate to release/$VERSION"
+        env:
+          STEPS_VERSION_OUTPUTS_VERSION: ${{ steps.version.outputs.version }}
 
       - name: Update PR label to tagged
         if: steps.check.outputs.is_release_pr == 'true'

.github/workflows/release-publish.yml

@@ -15,15 +15,15 @@ jobs:
     steps:
       - name: Validate branch
         run: |
-          if [[ ! "${{ github.ref_name }}" =~ ^release/v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+          if [[ ! "${GITHUB_REF_NAME}" =~ ^release/v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
             echo "Error: Must run from a release/v* branch (e.g., release/v0.3.0)"
             exit 1
           fi
 
       - name: Extract version
         id: version
         run: |
-          VERSION="${{ github.ref_name }}"
+          VERSION="${GITHUB_REF_NAME}"
           VERSION="${VERSION#release/v}"
           echo "version=$VERSION" >> $GITHUB_OUTPUT
           echo "Publishing version: $VERSION"
@@ -51,9 +51,10 @@ jobs:
       - name: Create merge-back PR
         env:
           GH_TOKEN: ${{ secrets.RELEASE_PAT }}
+          STEPS_VERSION_OUTPUTS_VERSION: ${{ steps.version.outputs.version }}
         run: |
           gh pr create \
             --base main \
-            --head "${{ github.ref_name }}" \
-            --title "chore: merge release v${{ steps.version.outputs.version }} to main" \
-            --body "Syncs version bump and CHANGELOG from release v${{ steps.version.outputs.version }} to main."
+            --head "${GITHUB_REF_NAME}" \
+            --title "chore: merge release v${STEPS_VERSION_OUTPUTS_VERSION} to main" \
+            --body "Syncs version bump and CHANGELOG from release v${STEPS_VERSION_OUTPUTS_VERSION} to main."