ci(psalm): Generate base analysis on pushes so we can compare to updated reports

Signed-off-by: Joas Schilling <213943+nickvergessen@users.noreply.github.com>

.github/workflows/static-code-analysis.yml

@@ -2,6 +2,10 @@ name: Psalm static code analysis
 
 on:
   pull_request:
+  push:
+    branches:
+      - master
+      - stable*
 
 jobs:
   static-code-analysis: