Syncpack: drop broken lint-staged hook, tighten config label

The `**/package.json: [syncpack lint]` lint-staged entry caused
pre-commit failures because lint-staged appends matched file paths
to the command and `syncpack lint` (v15) does not accept positional
paths. Whole-repo dependency linting is already covered by CI
(`npm run lint:deps`), so dropping the hook keeps commits unblocked
without losing the gate.

Also tightens the semverGroup label wording.

Author: manzoorwanijk

package.json

@@ -221,9 +221,6 @@
 		"package-lock.json": [
 			"npm run lint:lockfile"
 		],
-		"**/package.json": [
-			"syncpack lint"
-		],
 		"packages/*/package.json": [
 			"wp-scripts lint-pkg-json"
 		],

syncpack.config.mjs

@@ -20,7 +20,7 @@ export default {
 	],
 	semverGroups: [
 		{
-			label: 'All dependencies use caret ranges.',
+			label: 'All dependencies must use caret ranges.',
 			packages: [ '**' ],
 			dependencyTypes: [ 'prod', 'dev' ],
 			range: '^',