qa: improve cache and performances of Github actions

.github/workflows/mutation.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     env:
       php-version: '8.1'
-      php-extensions: xdebug, yaml
+      php-extensions: pcov, yaml
     steps:
       - name: Checkout
         uses: actions/checkout@v3
@@ -29,6 +29,12 @@ jobs:
       - name: Creating var directory
         run: mkdir -p var/cache
 
+      - name: Cache Mutation results
+        uses: actions/cache@v3.0.8
+        with:
+          path: var/cache
+          key: ${{ runner.os }}-qa-${{ hashFiles('composer.lock') }}-${{ hashFiles('.github/workflows/mutation.yml') }}
+
       - name: Running mutation tests
         if: github.ref == 'refs/heads/master'
         run: php vendor/bin/infection --threads=$(nproc)

.github/workflows/quality-assurance.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     env:
       php-version: '8.1'
-      php-extensions: xdebug, yaml
+      php-extensions: yaml
     steps:
       - name: Checkout
         uses: actions/checkout@v3
@@ -18,18 +18,18 @@ jobs:
           extensions: ${{ env.php-extensions }}
           ini-values: zend.assertions=1
 
+      - name: Creating var directory
+        run: mkdir -p var/cache
+
       - name: Cache QA results
         uses: actions/cache@v3.0.8
         with:
           path: var/cache
-          key: qa-${{ hashFiles('composer.lock') }}
+          key: ${{ runner.os }}-qa-${{ hashFiles('composer.lock') }}-${{ hashFiles('.github/workflows/quality-assurance.yml') }}
 
       - name: Checking Composer
         run: composer validate --strict
 
-      - name: Creating var directory
-        run: mkdir -p var/cache
-
       - uses: "ramsey/composer-install@v2"
 
       - name: Running PHPStan

.github/workflows/tests.yml

@@ -17,7 +17,7 @@ jobs:
           - "8.1"
 
     env:
-      php-extensions: xdebug, yaml
+      php-extensions: yaml
     steps:
       - name: Checkout
         uses: actions/checkout@v3

rector.php

@@ -2,6 +2,7 @@
 
 declare(strict_types=1);
 
+use Rector\Caching\ValueObject\Storage\FileCacheStorage;
 use Rector\Config\RectorConfig;
 use Rector\Core\Configuration\Option;
 use Rector\Php74\Rector\LNumber\AddLiteralSeparatorToNumberRector;
@@ -14,7 +15,10 @@ return static function (RectorConfig $config): void {
         __DIR__ . '/tests',
     ]);
 
-    $config->parameters()->set(Option::CACHE_DIR, 'var/cache/rector');
+    $config->parameters()->set(Option::CACHE_DIR, './var/cache/rector');
+
+    // @see https://github.com/rectorphp/rector/issues/7341
+    $config->parameters()->set(Option::CACHE_CLASS, FileCacheStorage::class);
 
     $config->sets([
         LevelSetList::UP_TO_PHP_74,