Run release on release creation (facebook#48)

Summary:
Pushing tags against existing commits doesn't seem to trigger the action, so let's list releases here instead.

Docs for this in D26607139.

Pull Request resolved: facebookincubator/fbjni#48

Test Plan:
Ran it on my fork. It failed but because there were unclosed previous updates, which is in fact expected (and quite useful, too, because it means we don't have a stray release).

https://github.com/passy/fbjni/runs/1961026784?check_suite_focus=true

Reviewed By: nikoant

Differential Revision: D26583351

Pulled By: passy

fbshipit-source-id: 1eee0b8c5b294a778da95c7017a9fbe4f5232354

first-party/fbjni/.github/workflows/release.yml

@@ -1,9 +1,9 @@
 name: Publish Android
 
 on:
-  push:
-    tags:
-      - v*
+  release:
+    types:
+      - created
   workflow_dispatch:
 
 jobs:
@@ -29,7 +29,7 @@ jobs:
         SONATYPE_NEXUS_PASSWORD: ${{ secrets.SONATYPE_NEXUS_PASSWORD }}
         SONATYPE_NEXUS_USERNAME: ${{ secrets.SONATYPE_NEXUS_USERNAME }}
     - name: Upload Java-Only Archives
-      run: ./gradlew -b host.gradle assembleRelease uploadArchives --info
+      run: ./gradlew -b host.gradle assemble uploadArchives --info
       env:
         SONATYPE_NEXUS_PASSWORD: ${{ secrets.SONATYPE_NEXUS_PASSWORD }}
         SONATYPE_NEXUS_USERNAME: ${{ secrets.SONATYPE_NEXUS_USERNAME }}