chore: Remove contents: write permission from build workflow

Removes the `permissions` block from the `build-desktop.yml` workflow. The `contents: write` permission is not required for building the application and has been removed to adhere to the principle of least privilege.

Author: Coding-Meet

.github/workflows/build-desktop.yml

@@ -5,9 +5,6 @@ on:
     tags:
       - 'v*' # Runs on version tags like v1.0.0
 
-permissions:
-  contents: write
-
 jobs:
   build:
     name: Build for ${{ matrix.os }}