Drop dependabot, update deps

Author: janedbal

.github/dependabot.yml

@@ -26,13 +26,13 @@
     "require-dev": {
         "ext-dom": "*",
         "ext-libxml": "*",
-        "editorconfig-checker/editorconfig-checker": "^10.6.0",
+        "editorconfig-checker/editorconfig-checker": "^10.7.0",
         "ergebnis/composer-normalize": "^2.19.0",
         "phpcompatibility/php-compatibility": "^9.3.5",
-        "phpstan/phpstan": "^1.12.3",
-        "phpstan/phpstan-phpunit": "^1.4.0",
-        "phpstan/phpstan-strict-rules": "^1.6.0",
-        "phpunit/phpunit": "^8.5.39 || ^9.6.20",
+        "phpstan/phpstan": "^1.12.26",
+        "phpstan/phpstan-phpunit": "^1.4.2",
+        "phpstan/phpstan-strict-rules": "^1.6.2",
+        "phpunit/phpunit": "^8.5.42 || ^9.6.23",
         "shipmonk/name-collision-detector": "^2.1.1",
         "slevomat/coding-standard": "^8.15.0"
     },