Drop Support for Php 8.1

This PR will be merged at the end of this month. As the README says, we maintain support for Php Versions for six months beyond their end of life. That time has now arrived for 8.1.

.github/workflows/main.yml

@@ -10,7 +10,6 @@ jobs:
         experimental:
           - false
         php-version:
-          - '8.1'
           - '8.2'
           - '8.3'
           - '8.4'
@@ -99,7 +98,7 @@ jobs:
       - name: Setup PHP, with composer and extensions
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.4
+          php-version: 8.2
           extensions: ctype, dom, fileinfo, filter, gd, iconv, intl, libxml, mbstring, simplexml, xml, xmlreader, xmlwriter, zip, zlib
           coverage: none
           tools: cs2pr
@@ -181,7 +180,7 @@ jobs:
         run: composer install --no-progress --prefer-dist --optimize-autoloader
 
       - name: Code Version Compatibility check with PHP_CodeSniffer
-        run: ./vendor/bin/phpcs -q --report-width=200 --report=summary,full src/ --standard=PHPCompatibility --runtime-set testVersion 8.1- --exclude=PHPCompatibility.Variables.ForbiddenThisUseContexts
+        run: ./vendor/bin/phpcs -q --report-width=200 --report=summary,full src/ --standard=PHPCompatibility --runtime-set testVersion 8.2- --exclude=PHPCompatibility.Variables.ForbiddenThisUseContexts
 
   phpstan:
     runs-on: ubuntu-latest