allow changes to ".pnp.cjs" files

* add `.pnp.cjs`

* add `.pnp.cjs` to test

---------

Co-authored-by: Tom Jenkinson <[email protected]>

Author: 3indblown Leaf

src/run.test.ts

@@ -247,6 +247,7 @@ describe('run', () => {
                   { filename: 'package.json', status: 'modified' },
                   { filename: 'package-lock.json', status: 'modified' },
                   { filename: 'yarn.lock', status: 'modified' },
+                  { filename: '.pnp.cjs', status: 'modified' },
                 ],
               },
             };

src/run.ts

@@ -256,8 +256,9 @@ export async function run(): Promise<Result> {
   }
   const onlyPackageJsonChanged = comparison.data.files.every(
     ({ filename, status }) =>
-      ['package.json', 'package-lock.json', 'yarn.lock'].includes(filename) &&
-      status === 'modified'
+      ['package.json', 'package-lock.json', 'yarn.lock', '.pnp.cjs'].includes(
+        filename
+      ) && status === 'modified'
   );
   if (!onlyPackageJsonChanged) {
     core.error('More changed than the package.json and lockfile');