upgrade pnpm, update knip config (#94)

After upgrading knip via dependabot it said that the "src/index.tsx"
entrypoint is redundant.

knip.jsonc

@@ -25,7 +25,7 @@
       ]
     },
     "apps/frontend": {
-      "entry": ["src/index.tsx", "src/wakatime-override.ts"],
+      "entry": ["src/wakatime-override.ts"],
 
       "ignoreDependencies": [
         // below dependencies are added because backend folder is copied inside frontend folder,

package.json

@@ -2,7 +2,7 @@
   "name": "root",
   "private": true,
   "type": "module",
-  "packageManager": "pnpm@10.28.2+sha512.41872f037ad22f7348e3b1debbaf7e867cfd448f2726d9cf74c08f19507c31d2c8e7a11525b983febc2df640b5438dee6023ebb1f84ed43cc2d654d2bc326264",
+  "packageManager": "pnpm@10.30.1+sha512.3590e550d5384caa39bd5c7c739f72270234b2f6059e13018f975c313b1eb9fefcc09714048765d4d9efe961382c312e624572c0420762bdc5d5940cdf9be73a",
   "devDependencies": {
     "@eslint/compat": "2.0.2",
     "@eslint/js": "9.39.2",