Try to fix ci-fuzz.yml by removing permissions {}. cmark doesn't have that line either.
diff --git a/.github/workflows/ci-fuzz.yml b/.github/workflows/ci-fuzz.yml
index 8c28d60..7cb48b5 100644
--- a/.github/workflows/ci-fuzz.yml
+++ b/.github/workflows/ci-fuzz.yml
@@ -1,6 +1,5 @@
name: CIFuzz
on: [pull_request]
-permissions: {}
jobs:
Fuzzing:
runs-on: ubuntu-latest