Upgrade pnpm-lock using v9 (#164)

Closes #161 

## Description

<!-- Describe your implementation plan and approach -->
Upgraded the `pnpm-lock.yaml` file using pnpm version 9.12.2 locally as specified in the issue

## Current Tasks

<!-- (Optional) List the tasks that you're planning to do in this PR.
This is to indicate how much you have been progressing before this PR is ready for review -->

- [x] Update pnpm version definition in package.json: https://github.com/mazipan/tanyaaja.in/blob/master/package.json#L81
- [x] Install pnpm v9 in your local machine: https://pnpm.io/cli/self-update
- [x] Remove old pnpm-lock.yaml
- [x] Regenerate new pnpm-lock.yaml by running pnpm i

@mazipan please review and merge

package.json

@@ -75,9 +75,9 @@
     "postcss": "8.4.47",
     "tailwindcss": "3.4.13"
   },
-  "packageManager": "pnpm@8.6.5",
+  "packageManager": "pnpm@9.12.2",
   "engines": {
     "node": "20.x",
-    "pnpm": ">=8"
+    "pnpm": "^9.12.2"
   }
 }