PG-375: only run code coverage test on merge

Signed-off-by: Kai Wagner <kai.wagner@percona.com>

.github/workflows/code-coverage-test.yml

@@ -1,8 +1,13 @@
 name: code-coverage-test
-on: ["push", "pull_request"]
+on:
+  pull_request:
+    types:
+      - closed 
 
 jobs:
-  build:
+  if_merged:
+    if: github.event.pull_request.merged == true
+    build:
     name: coverage-test
     runs-on: ubuntu-latest
     steps:

.github/workflows/postgresql-14-build.yml

@@ -1,5 +1,5 @@
 name: postgresql-14-build
-on: [push]
+on: ["push", "pull_request"]
 
 jobs:
   build: