Update npm and node engines versions

Signed-off-by: Nextcloud bot <bot@nextcloud.com>

package.json

@@ -60,8 +60,8 @@
 		"vuex": "^3.6.2"
 	},
 	"engines": {
-		"node": ">=14.0.0",
-		"npm": ">=7.0.0"
+		"node": "^14.0.0",
+		"npm": "^7.0.0"
 	},
 	"devDependencies": {
 		"@cypress/browserify-preprocessor": "^3.0.1",