Include paths on pull_request event trigger for compile-queries.yml workflow

Author: oscarsj

.github/workflows/compile-queries.yml

@@ -7,6 +7,11 @@ on:
       - "rc/*"
       - "codeql-cli-*"
   pull_request:
+    paths:
+      - '*.ql'
+      - '*.qll'
+      - '**/qlpack.yml'
+      - '*.dbscheme'
 
 permissions:
   contents: read