fix: add arch to cache key (#896)

* fix: add arch to cache key

* test: update tests accordingly

src/cache-distributions/poetry-cache.ts

@@ -47,7 +47,7 @@ class PoetryCache extends CacheDistributor {
   protected async computeKeys() {
     const hash = await glob.hashFiles(this.patterns);
     // "v2" is here to invalidate old caches of this cache distributor, which were created broken:
-    const primaryKey = `${this.CACHE_KEY_PREFIX}-${process.env['RUNNER_OS']}-python-${this.pythonVersion}-${this.packageManager}-v2-${hash}`;
+    const primaryKey = `${this.CACHE_KEY_PREFIX}-${process.env['RUNNER_OS']}-${process.arch}-python-${this.pythonVersion}-${this.packageManager}-v2-${hash}`;
     const restoreKey = undefined;
     return {
       primaryKey,