refactor: update imports to use ES module syntax and improve test structure (#1350)

- Changed import statements across multiple files to use the .js extension for ES module compatibility.
- Refactored test files to utilize jest's unstable_mockModule for mocking core actions.
- Removed unnecessary spy instances in tests, replacing them with direct mocked function calls.
- Updated TypeScript configuration to target ES2022 and use NodeNext module resolution.
- Removed the tsconfig.spec.json file and adjusted the main tsconfig.json to exclude test files.

.licenses/npm/path-expression-matcher.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: path-expression-matcher
-version: 1.5.0
+version: 1.6.1
 type: npm
 summary: Efficient path tracking and pattern matching for XML/JSON parsers
 homepage: https://github.com/NaturalIntelligence/path-expression-matcher#readme