ci: run Forgejo Actions & Packages test w/ dynamic matrix (#1367)

Incorporates these changes:
- When `forgejo/build-from-sources` is present, Actions & Packages tests are run only against the built versions.  Otherwise, they are run against the versions defined in `$RELEASE_NUMBERS`
- Updates Packages tests which are testing Alpine publishing to use currently supported Alpine releases
- Actions & Packages tests are run in a matrix, allowing parallel execution

Only the Actions & Packages tests take a significant amount of time (>10 minutes), so changes have been limited to those test suites -- every test suite that is moved into a matrix adds additional overhead in the 1 minute `prepare-end-to-end` step.

Reviewed-on: https://code.forgejo.org/forgejo/end-to-end/pulls/1367
Co-authored-by: Mathieu Fenniak <mathieu@fenniak.net>
Co-committed-by: Mathieu Fenniak <mathieu@fenniak.net>

.forgejo/workflows/end-to-end.yml

@@ -18,6 +18,7 @@ jobs:
       image: 'data.forgejo.org/oci/node:20-bookworm'
     outputs:
       built: "${{ steps.build.outputs.built }}"
+      forgejo_versions_json: "${{ steps.build.outputs.forgejo_versions_json }}"
     steps:
       - uses: https://data.forgejo.org/actions/checkout@v4
       - uses: https://data.forgejo.org/actions/setup-go@v5
@@ -31,6 +32,8 @@ jobs:
 
           if ! test -f forgejo/build-from-sources; then
              echo forgejo/build-from-sources is not present, do not build any version from source
+             source lib/lib.sh
+             echo "forgejo_versions_json=$(node -p "JSON.stringify(process.argv[1].split(' '))" "$RELEASE_NUMBERS")" >> $FORGEJO_OUTPUT
              echo "built=no" >> $FORGEJO_OUTPUT
              exit 0
           fi
@@ -52,6 +55,7 @@ jobs:
             mv $forgejo /tmp/forgejo-upload/forgejo-$version
           done
 
+          echo "forgejo_versions_json=$(node -p "JSON.stringify(process.argv[1].split(' '))" "$(cat forgejo/build-from-sources)")" >> $FORGEJO_OUTPUT
           echo "built=yes" >> $FORGEJO_OUTPUT
 
       - name: steps context dump for debug
@@ -70,12 +74,15 @@ jobs:
   packages:
     needs: [build]
     runs-on: lxc-trixie
+    strategy:
+      matrix:
+        forgejo_version: ${{ fromJSON(needs.build.outputs.forgejo_versions_json) }}
     steps:
       - uses: https://data.forgejo.org/actions/checkout@v4
       - uses: ./.forgejo/prepare-end-to-end
         with:
             built: ${{ needs.build.outputs.built }}
-      - run: su forgejo -c "./end-to-end.sh test_packages"
+      - run: su forgejo -c "./end-to-end.sh test_packages ${{ matrix.forgejo_version }}"
       - if: ${{ needs.build.outputs.built == 'yes' }}
         uses: ./.forgejo/upload-coverage
         with:
@@ -87,13 +94,16 @@ jobs:
   actions:
     needs: [build]
     runs-on: lxc-trixie
+    strategy:
+      matrix:
+        forgejo_version: ${{ fromJSON(needs.build.outputs.forgejo_versions_json) }}
     steps:
       - uses: https://data.forgejo.org/actions/checkout@v4
       - uses: ./.forgejo/prepare-end-to-end
         with:
             built: ${{ needs.build.outputs.built }}
       - run: ./end-to-end.sh prepare_dockerd
-      - run: su forgejo -c "./end-to-end.sh test_actions"
+      - run: su forgejo -c "./end-to-end.sh test_actions ${{ matrix.forgejo_version }}"
       - if: ${{ needs.build.outputs.built == 'yes' }}
         uses: ./.forgejo/upload-coverage
         with: