chore(deps): update dependency cac to v7 (#13355)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

packages/rspack-cli/package.json

@@ -40,7 +40,7 @@
     "@rspack/core": "workspace:*",
     "@rspack/dev-server": "2.0.0-beta.5",
     "@rspack/test-tools": "workspace:*",
-    "cac": "^6.7.14",
+    "cac": "^7.0.0",
     "concat-stream": "^2.0.0",
     "cross-env": "^10.1.0",
     "execa": "^5.1.1",