Stop triggering static analysis workflows on tests

In my opinion it is not great that we do not run static analysis tools on
tests, but since we do not, let us stop triggering extra jobs for no reason.

Author: greg0ire

.github/workflows/static-analysis.yml

@@ -11,7 +11,7 @@ on:
       - lib/**
       - phpstan*
       - psalm*
-      - tests/**
+      - tests/Doctrine/StaticAnalysis/**
   push:
     branches:
       - "*.x"
@@ -21,7 +21,7 @@ on:
       - lib/**
       - phpstan*
       - psalm*
-      - tests/**
+      - tests/Doctrine/StaticAnalysis/**
 
 jobs:
   static-analysis-phpstan: