ci: Remove PHP 8.1 builds

Author: Stephan Wentz

.github/workflows/build.yml

@@ -18,7 +18,6 @@ jobs:
       matrix:
         dependencies: ["lowest", "highest"]
         php-version:
-          - "8.1"
           - "8.2"
 
     steps:

.github/workflows/code_coverage.yaml

@@ -14,7 +14,7 @@ jobs:
     - uses: actions/checkout@v2
     - uses: shivammathur/setup-php@master
       with:
-        php-version: 8.1
+        php-version: 8.2
         coverage: xdebug
     - name: Load dependencies from cache
       id: composer-cache
@@ -23,9 +23,9 @@ jobs:
     - uses: actions/cache@v1
       with:
         path: ${{ steps.composer-cache.outputs.dir }}
-        key: ${{ runner.os }}-php8.1-composer-${{ hashFiles('**/composer.json') }}
+        key: ${{ runner.os }}-php8.2-composer-${{ hashFiles('**/composer.json') }}
         restore-keys: |
-          ${{ runner.os }}-php8.1-composer-
+          ${{ runner.os }}-php8.2-composer-
 
     - run: composer install --prefer-dist --no-progress --no-suggest
     - run: php vendor/bin/phpunit --coverage-clover build/logs/clover.xml