Try to fix non running release job.

See https://github.com/orgs/community/discussions/54574#discussioncomment-7068601

Author: thomaskrause

.github/workflows/release_capi.yml

@@ -1,12 +1,14 @@
 on:
+  push:
+    branches: [main]
   release:
     types: [published]
   pull_request:
     types: [labeled]
 name: Append C-API artifact to latest release
 jobs:
   deploy_linux_binaries:
-    if: ${{ github.event.label.name == 'test-release-process' || github.event_name == 'release' }}
+    if: ${{ github.event.label.name == 'test-release-process' || (github.event_name == 'release' && github.event.action == 'published') }}
     runs-on: ubuntu-20.04
     env:
       GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -35,7 +37,7 @@ jobs:
           omitNameDuringUpdate: true
           omitPrereleaseDuringUpdate: true
   deploy_windows_binaries:
-    if: ${{ github.event.label.name == 'test-release-process' || github.event_name == 'release' }}
+    if: ${{ github.event.label.name == 'test-release-process' || (github.event_name == 'release' && github.event.action == 'published') }}
     runs-on: windows-2019
     steps:
       - id: latest-release
@@ -62,7 +64,7 @@ jobs:
           omitNameDuringUpdate: true
           omitPrereleaseDuringUpdate: true
   deploy_macos_binaries:
-    if: ${{ github.event.label.name == 'test-release-process' || github.event_name == 'release' }}
+    if: ${{ github.event.label.name == 'test-release-process' || (github.event_name == 'release' && github.event.action == 'published') }}
     runs-on: macos-12
     steps:
       - id: latest-release