Isolate Composer caches per job to prevent dependency conflicts

Remove overly broad cache restore-keys that allowed cross-job cache pollution. Each job now maintains its own isolated cache based on job type and PHP version. This prevents Codeception's PHP 8.1+ requirements from affecting PHPStan jobs running on PHP 8.0.

Co-authored-by: jmiller-moko <230051081+jmiller-moko@users.noreply.github.com>

.github/workflows/joomla_testing.yml

@@ -239,8 +239,6 @@ jobs:
           key: ${{ runner.os }}-composer-codeception-8.1-${{ hashFiles('**/composer.lock') }}
           restore-keys: |
             ${{ runner.os }}-composer-codeception-8.1-
-            ${{ runner.os }}-composer-codeception-
-            ${{ runner.os }}-composer-
 
       - name: Install Codeception
         env:

.github/workflows/php_quality.yml

@@ -45,8 +45,6 @@ jobs:
           key: ${{ runner.os }}-composer-phpcs-${{ matrix.php-version }}-${{ hashFiles('**/composer.lock') }}
           restore-keys: |
             ${{ runner.os }}-composer-phpcs-${{ matrix.php-version }}-
-            ${{ runner.os }}-composer-phpcs-
-            ${{ runner.os }}-composer-
 
       - name: Install PHP_CodeSniffer
         env:
@@ -101,8 +99,6 @@ jobs:
           key: ${{ runner.os }}-composer-phpstan-${{ matrix.php-version }}-${{ hashFiles('**/composer.lock') }}
           restore-keys: |
             ${{ runner.os }}-composer-phpstan-${{ matrix.php-version }}-
-            ${{ runner.os }}-composer-phpstan-
-            ${{ runner.os }}-composer-
 
       - name: Install PHPStan
         env:
@@ -151,8 +147,6 @@ jobs:
           key: ${{ runner.os }}-composer-phpcompat-8.3-${{ hashFiles('**/composer.lock') }}
           restore-keys: |
             ${{ runner.os }}-composer-phpcompat-8.3-
-            ${{ runner.os }}-composer-phpcompat-
-            ${{ runner.os }}-composer-
 
       - name: Install dependencies
         env: