fix(eslint): add .mjs files to test file pattern for import resolution

The ESLint config was only disabling import resolution checks for .ts and
.mts test files, but not .mjs files. This caused linting failures for
test/integration/esm-imports.test.mjs.

- Add 'test/**/*.mjs' to the test files pattern
- Disables n/no-missing-import and import-x/no-unresolved for .mjs tests
- Fixes lint errors: "Unable to resolve path to module @socketsecurity/lib/globs"

Author: jdalton

.config/eslint.config.mjs

@@ -346,7 +346,7 @@ const eslintConfig = [
   },
   {
     // Relax rules for test files - testing code has different conventions
-    files: ['test/**/*.ts', 'test/**/*.mts'],
+    files: ['test/**/*.ts', 'test/**/*.mts', 'test/**/*.mjs'],
     rules: {
       'n/no-missing-import': 'off',
       'import-x/no-unresolved': 'off',