CI: use PHP 8.4 for QA workflows

Author: felixure

.github/workflows/codesniffer.yml

@@ -15,4 +15,4 @@ jobs:
     name: "Codesniffer"
     uses: contributte/.github/.github/workflows/codesniffer.yml@master
     with:
-      php: "8.2"
+      php: "8.4"

.github/workflows/coverage.yml

@@ -15,4 +15,4 @@ jobs:
     name: "Nette Tester"
     uses: contributte/.github/.github/workflows/nette-tester-coverage-v2.yml@master
     with:
-      php: "8.2"
+      php: "8.4"

.github/workflows/phpstan.yml

@@ -15,4 +15,4 @@ jobs:
     name: "Phpstan"
     uses: contributte/.github/.github/workflows/phpstan.yml@master
     with:
-      php: "8.2"
+      php: "8.4"