fix: fixed spec not caching

Author: gibahjoe

openapi-generator-annotations/.gitignore

@@ -165,3 +165,5 @@ Network Trash Folder
 Temporary Items
 .apdisk
 .idea/
+
+**/*.mocks.dart

openapi-generator/.gitignore

@@ -169,4 +169,5 @@ example/.dart_tool
 
 # Generated test output
 test/specs/test-cached.json
-test/specs/localstack/**
+test/specs/localstack/**
+**/*.mocks.dart

openapi-generator/lib/src/gen_on_spec_changes.dart

@@ -186,6 +186,9 @@ Future<void> cacheSpec({
   if (outputFile.existsSync()) {
     log('Found cached asset updating');
   } else {
+    if (!outputFile.parent.existsSync()) {
+      outputFile.parent.createSync(recursive: true);
+    }
     log('No previous openapi-generated cache found. Creating cache');
   }