chore: initial breaking change for kubernetes plugin to remove deprecated exports and removing kubernetes builder

Signed-off-by: benjdlambert <ben@blam.sh>

plugins/kubernetes-backend/package.json

@@ -27,23 +27,8 @@
     "directory": "plugins/kubernetes-backend"
   },
   "license": "Apache-2.0",
-  "exports": {
-    ".": "./src/index.ts",
-    "./alpha": "./src/alpha.ts",
-    "./package.json": "./package.json"
-  },
   "main": "src/index.ts",
   "types": "src/index.ts",
-  "typesVersions": {
-    "*": {
-      "alpha": [
-        "src/alpha.ts"
-      ],
-      "package.json": [
-        "package.json"
-      ]
-    }
-  },
   "files": [
     "dist",
     "config.d.ts"
@@ -62,7 +47,6 @@
     "@aws-sdk/credential-providers": "^3.350.0",
     "@aws-sdk/signature-v4": "^3.347.0",
     "@azure/identity": "^4.0.0",
-    "@backstage/backend-common": "^0.25.0",
     "@backstage/backend-plugin-api": "workspace:^",
     "@backstage/catalog-client": "workspace:^",
     "@backstage/catalog-model": "workspace:^",