fix: upgrade multiple dependencies with Snyk

Snyk has created this PR to upgrade:
  - @protobuf-ts/protoc from 2.7.0 to 2.9.4.
    See this package in npm: https://www.npmjs.com/package/@protobuf-ts/protoc
  - google-protobuf from 3.19.0 to 3.21.4.
    See this package in npm: https://www.npmjs.com/package/google-protobuf
  - long from 5.2.1 to 5.2.3.
    See this package in npm: https://www.npmjs.com/package/long
  - postcss from 8.4.24 to 8.4.41.
    See this package in npm: https://www.npmjs.com/package/postcss

See this project in Snyk:
https://app.snyk.io/org/sammytezzy/project/53a363e1-ba9e-4454-87bb-e9797fc82baa?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -71,11 +71,11 @@
     "typescript": "^4.3.5"
   },
   "dependencies": {
-    "@protobuf-ts/protoc": "^2.7.0",
-    "google-protobuf": "^3.17.3",
-    "long": "^5.2.1",
+    "@protobuf-ts/protoc": "^2.9.4",
+    "google-protobuf": "^3.21.4",
+    "long": "^5.2.3",
     "object-path": "^0.11.8",
-    "postcss": "^8.4.24",
+    "postcss": "^8.4.41",
     "rollup-plugin-postcss": "^4.0.2",
     "ts-protoc-gen": "^0.15.0"
   },