fix: testdata path filter

Author: erikburt

.github/workflows/ci-core.yml

@@ -52,9 +52,9 @@ jobs:
               - "**/testdata/**"
               - "**/*_test.go"
             core-test-files:
-              - "testdata/**.go"
+              - "testdata/**"
               - "core/**/testdata/**"
-              - "core/**_test.go"
+              - "core/**/*_test.go"
             e2e-tests-files:
               - "system-tests/**"
               - "integration-tests/**"