ci: Align integration test dependencies with 3rdaprty/

Signed-off-by: Joas Schilling <coding@schilljs.com>

build/integration/.gitignore

@@ -2,4 +2,3 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 vendor
 output
-composer.lock

build/integration/composer.json

@@ -1,16 +1,16 @@
 {
 	"config": {
 		"platform": {
-			"php": "8.0.2"
+			"php": "8.1"
 		},
 		"sort-packages": true
 	},
 	"require-dev": {
 		"behat/behat": "^3.14",
 		"dms/phpunit-arraysubset-asserts": "^0.5",
-		"guzzlehttp/guzzle": "^7.8",
+		"guzzlehttp/guzzle": "^7.9",
 		"phpunit/phpunit": "^9.6",
-		"sabre/dav": "^4.6",
-		"symfony/event-dispatcher": "^5.4"
+		"sabre/dav": "^4.7",
+		"symfony/event-dispatcher": "^6.4"
 	}
 }