Upgrade phpstan; increase phpstan level; fix a few bugs

.editorconfig

@@ -14,3 +14,6 @@ indent_size = 2
 
 [*.php]
 ij_php_align_multiline_parameters = false
+
+[*.neon]
+indent_style = tab

composer.json

@@ -20,8 +20,8 @@
     },
     "require-dev": {
         "mink/driver-testsuite": "dev-master",
-        "phpstan/phpstan": "^1.10",
-        "phpstan/phpstan-phpunit": "^1.3",
+        "phpstan/phpstan": "^2",
+        "phpstan/phpstan-phpunit": "^2",
         "phpunit/phpunit": "^9.6.8",
         "symfony/error-handler": "^5.4 || ^6.0 || ^7.0",
         "symfony/process": "^5.4 || ^6.0 || ^7.0",

phpstan.dist.neon

@@ -1,11 +1,38 @@
-parameters:
-    level: 8
-    paths:
-        - src
-        - tests
-    checkMissingIterableValueType: false
-    treatPhpDocTypesAsCertain: false
-
 includes:
-    - vendor/phpstan/phpstan-phpunit/extension.neon
-    - vendor/phpstan/phpstan-phpunit/rules.neon
+	- vendor/phpstan/phpstan-phpunit/extension.neon
+	- vendor/phpstan/phpstan-phpunit/rules.neon
+
+parameters:
+	level: 10
+	paths:
+		- src
+		- tests
+	ignoreErrors:
+		-
+			# See: https://github.com/php-webdriver/php-webdriver/pull/1120
+			message: '#^Parameter \#1 \$seconds of method Facebook\\WebDriver\\WebDriverTimeouts\:\:implicitlyWait\(\) expects int, float\|int given\.$#'
+			identifier: argument.type
+			count: 1
+			path: src/WebdriverClassicDriver.php
+		-
+			# See: https://github.com/php-webdriver/php-webdriver/pull/1120
+			message: '#^Parameter \#1 \$seconds of method Facebook\\WebDriver\\WebDriverTimeouts\:\:pageLoadTimeout\(\) expects int, float\|int given\.$#'
+			identifier: argument.type
+			count: 1
+			path: src/WebdriverClassicDriver.php
+		-
+			# See: https://github.com/php-webdriver/php-webdriver/pull/1120
+			message: '#^Parameter \#1 \$seconds of method Facebook\\WebDriver\\WebDriverTimeouts\:\:setScriptTimeout\(\) expects int, float\|int given\.$#'
+			identifier: argument.type
+			count: 1
+			path: src/WebdriverClassicDriver.php
+		-
+			message: '#^Method Mink\\WebdriverClassicDriver\\WebdriverClassicDriver\:\:getWindowHandleFromName\(\) should return string but returns mixed\.$#'
+			identifier: return.type
+			count: 1
+			path: src/WebdriverClassicDriver.php
+		-
+			message: '#^Parameter \#1 \$handle of method Facebook\\WebDriver\\Remote\\RemoteTargetLocator\:\:window\(\) expects string, mixed given\.$#'
+			identifier: argument.type
+			count: 3
+			path: src/WebdriverClassicDriver.php