Revert "ci: scope GitHub API tokens"

This reverts commit 1651cd8.

Turns out this breaks CI...

Author: cljoly

.github/workflows/ci.yml

@@ -4,8 +4,6 @@ on:
 
 name: Continuous integration
 
-permissions: {}
-
 env:
   MSRV: 1.84.0
   CARGO_TERM_COLOR: always
@@ -161,9 +159,6 @@ jobs:
   coverage:
     name: Code coverage
     runs-on: ubuntu-24.04
-    permissions:
-      - checks: write
-      - contents: read
     steps:
       - uses: actions/checkout@v3
       - name: Install libsqlite