updated package version to make yarn run diff succeed

plugins/kafka-backend/package.json

@@ -45,7 +45,7 @@
     "yn": "^4.0.0"
   },
   "devDependencies": {
-    "@backstage/cli": "^0.4.2",
+    "@backstage/cli": "^0.4.3",
     "supertest": "^4.0.2"
   },
   "files": [

plugins/kafka/package.json

@@ -21,12 +21,12 @@
   },
   "dependencies": {
     "@backstage/catalog-model": "^0.6.0",
-    "@backstage/core": "^0.4.1",
+    "@backstage/core": "^0.4.3",
     "@backstage/theme": "^0.2.2",
     "@backstage/plugin-catalog": "^0.2.7",
     "@backstage/plugin-kafka-backend": "^0.1.0",
     "@material-ui/core": "^4.11.0",
-    "@material-ui/icons": "^4.11.2",
+    "@material-ui/icons": "^4.9.1",
     "@material-ui/lab": "4.0.0-alpha.45",
     "lodash": "^4.17.20",
     "react": "^16.13.1",
@@ -35,9 +35,9 @@
     "react-use": "^15.3.3"
   },
   "devDependencies": {
-    "@backstage/cli": "^0.4.2",
-    "@backstage/dev-utils": "^0.1.6",
-    "@backstage/test-utils": "^0.1.5",
+    "@backstage/cli": "^0.4.5",
+    "@backstage/dev-utils": "^0.1.7",
+    "@backstage/test-utils": "^0.1.6",
     "@testing-library/jest-dom": "^5.10.1",
     "@testing-library/react": "^10.4.1",
     "@testing-library/user-event": "^12.0.7",