ci: code coverage upload with old GIT_BRANCH env

reverted to the env that we used before the redesign of the CI jobs

Author: sleidig

.github/workflows/pull-request-update-or-push-tag.yml

@@ -14,19 +14,12 @@ jobs:
     runs-on: ubuntu-latest
     env:
       GIT_COMMIT_SHA: ${{ github.sha }}
+      GIT_BRANCH: ${{ github.head_ref }}
       CC_TEST_REPORTER_ID: ${{ secrets.CODE_CLIMATE_ID }}
     steps:
       - name: Checkout repository files
         uses: actions/checkout@v4
 
-      - name: Extract tag (release)
-        if: ${{ github.event.ref != '' }}
-        run: echo "GIT_BRANCH=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
-
-      - name: Extract tag (pull request)
-        if: ${{ github.event.ref == '' }}
-        run: echo "GIT_BRANCH=pr-${{ github.event.number }}" >> $GITHUB_ENV
-
       - name: Install Code Climate Test Reporter
         run: |
           curl -Lo cc-test-reporter https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64
@@ -118,19 +111,12 @@ jobs:
       - test
     env:
       GIT_COMMIT_SHA: ${{ github.sha }}
+      GIT_BRANCH: ${{ github.head_ref }}
       CC_TEST_REPORTER_ID: ${{ secrets.CODE_CLIMATE_ID }}
     steps:
       - name: Checkout repository files
         uses: actions/checkout@v4
 
-      - name: Extract tag (release)
-        if: ${{ github.event.ref != '' }}
-        run: echo "GIT_BRANCH=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
-
-      - name: Extract tag (pull request)
-        if: ${{ github.event.ref == '' }}
-        run: echo "GIT_BRANCH=pr-${{ github.event.number }}" >> $GITHUB_ENV
-
       - name: Download coverage reports
         uses: actions/download-artifact@v4
         with: