Use PHP 8.1 for tests.

Author: janbarasek

.github/ISSUE_TEMPLATE/Bug_report.md

@@ -10,7 +10,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.0
+          php-version: 8.1
           coverage: none
 
       - run: composer create-project nette/code-checker temp/code-checker ^3 --no-progress
@@ -23,7 +23,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.0
+          php-version: 8.1
           coverage: none
 
       - run: composer create-project nette/coding-standard temp/coding-standard ^3 --no-progress --ignore-platform-reqs

.github/ISSUE_TEMPLATE/Feature_request.md

@@ -19,7 +19,7 @@ jobs:
     - name: Install PHP
       uses: shivammathur/setup-php@master
       with:
-        php-version: 8.0
+        php-version: 8.1
 
     - name: Install composer deps
       run: |

.github/ISSUE_TEMPLATE/Support_question.md

@@ -10,7 +10,7 @@ jobs:
       - name: Install PHP
         uses: shivammathur/setup-php@master
         with:
-          php-version: 8.0
+          php-version: 8.1
 
       - name: Checkout code
         uses: actions/checkout@v2