Bump protobufjs from 6.11.3 to 6.11.4

Bumps [protobufjs](https://github.com/protobufjs/protobuf.js) from 6.11.3 to 6.11.4.
- [Release notes](https://github.com/protobufjs/protobuf.js/releases)
- [Changelog](https://github.com/protobufjs/protobuf.js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/protobufjs/protobuf.js/commits)

---
updated-dependencies:
- dependency-name: protobufjs
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

packages/cosmwasm-stargate/package.json

@@ -79,7 +79,7 @@
     "karma-jasmine-html-reporter": "^1.5.4",
     "nyc": "^15.1.0",
     "prettier": "^2.8.1",
-    "protobufjs": "~6.11.3",
+    "protobufjs": "~6.11.4",
     "readonly-date": "^1.0.0",
     "ses": "^0.11.0",
     "source-map-support": "^0.5.19",

packages/proto-signing/package.json

@@ -75,7 +75,7 @@
     "karma-jasmine-html-reporter": "^1.5.4",
     "nyc": "^15.1.0",
     "prettier": "^2.8.1",
-    "protobufjs": "~6.11.3",
+    "protobufjs": "~6.11.4",
     "ses": "^0.11.0",
     "source-map-support": "^0.5.19",
     "ts-node": "^8",

packages/stargate/package.json

@@ -48,7 +48,7 @@
     "@cosmjs/utils": "workspace:^",
     "cosmjs-types": "^0.8.0",
     "long": "^4.0.0",
-    "protobufjs": "~6.11.3",
+    "protobufjs": "~6.11.4",
     "xstream": "^11.14.0"
   },
   "devDependencies": {