chore(packages): Bump Nx packages to 21.6.4

- Updated `@nx/devkit`, `@nx/workspace`, and related packages to `21.6.4`.
- Updated root `nx` dependency to align with package versions.

Author: TriPSs

package.json

@@ -33,8 +33,8 @@
   },
   "dependencies": {
     "@actions/core": "^1.11.1",
-    "@nx/devkit": "21.4.1",
-    "@nx/workspace": "21.4.1",
+    "@nx/devkit": "21.6.4",
+    "@nx/workspace": "21.6.4",
     "@types/tar": "^6.1.13",
     "axios": "^1.11.0",
     "crypto-js": "^4.2.0",
@@ -49,13 +49,13 @@
     "@google-cloud/storage": "^7.17.2",
     "@jamesives/github-pages-deploy-action": "^4.7.3",
     "@jscutlery/semver": "^5.7.1",
-    "@nx/eslint-plugin": "21.4.1",
-    "@nx/jest": "21.4.1",
-    "@nx/js": "21.4.1",
-    "@nx/node": "21.4.1",
-    "@nx/plugin": "21.4.1",
-    "@nx/react": "21.4.1",
-    "@nx/webpack": "21.4.1",
+    "@nx/eslint-plugin": "21.6.4",
+    "@nx/jest": "21.6.4",
+    "@nx/js": "21.6.4",
+    "@nx/node": "21.6.4",
+    "@nx/plugin": "21.6.4",
+    "@nx/react": "21.6.4",
+    "@nx/webpack": "21.6.4",
     "@pulumi/gcp": "^8.41.1",
     "@pulumi/pulumi": "^3.192.0",
     "@types/jest": "30.0.0",
@@ -74,7 +74,7 @@
     "jest": "30.1.3",
     "jest-environment-jsdom": "30.1.2",
     "jest-util": "30.0.5",
-    "nx": "21.4.1",
+    "nx": "21.6.4",
     "prettier": "3.6.2",
     "ts-jest": "29.4.1",
     "ts-node": "10.9.2",