fix(PRI-564): add eslint/prettier/typescript as direct devDeps

pnpm strict isolation (-frozen-lockfile) only exposes binaries from direct
devDependencies. eslint, prettier, and typescript were transitive peers of
@kinvolk/headlamp-plugin and not accessible in CI.

- eslint: ^8.57.1
- prettier: ^3.0.0
- typescript: ^5.6.2

package.json

@@ -29,20 +29,13 @@
     "@testing-library/jest-dom": "^6.4.8",
     "@testing-library/react": "^16.0.0",
     "@testing-library/user-event": "^14.5.2",
-    "eslint": "^8.57.0",
+    "eslint": "^8.57.1",
     "jsdom": "^24.0.0",
     "prettier": "^3.0.0",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "react-router-dom": "^5.3.0",
     "typescript": "^5.6.2",
-    "vite": "^6.4.1",
-    "vite-plugin-svgr": "^4.5.0",
     "vitest": "^3.0.5"
-  },
-  "pnpm": {
-    "overrides": {
-      "elliptic": ">=6.6.1"
-    }
   }
 }

tsconfig.json

@@ -2,7 +2,6 @@
   "extends": "@kinvolk/headlamp-plugin/config/plugins-tsconfig.json",
   "compilerOptions": {
     "jsx": "react",
-    "skipLibCheck": true,
     "types": ["vite/client", "vite-plugin-svgr/client", "vitest/globals", "@testing-library/jest-dom"]
   },
   "include": ["src"]