ci(release): serialize play before the fdroid_reference chain

A tag push started play (AAB → Play) and fdroid_reference_armeabi_v7a at
the same instant; two heavy Android builds on the shared runner
(capacity:2) OOM-killed play's Gradle daemon ('daemon disappeared') deep
in bundleRelease. Chain the fdroid references after play with needs:play
+ if:always() so only one Android build runs at a time. if:always() keeps
the fdroid chain independent of play's result (still runs when play fails
or, on workflow_dispatch, is skipped).

.forgejo/workflows/release.yml

@@ -111,6 +111,13 @@ jobs:
         run: rm -f android/key.properties "$GITHUB_WORKSPACE/tane-upload.jks"
 
   fdroid_reference_armeabi_v7a:
+    # Serialize after play so two heavy Android builds never run concurrently on
+    # the shared host (capacity:2) — that contention OOM-killed play's Gradle
+    # daemon. `if: always()` keeps the fdroid chain independent of play's result
+    # (runs after play whether it succeeded, failed, or — on workflow_dispatch —
+    # was skipped).
+    needs: play
+    if: ${{ always() }}
     runs-on: docker
     container:
       image: registry.gitlab.com/fdroid/fdroidserver:buildserver-trixie