GHA/fuzz: try fixing concurrency group deadlock

```
Fuzzer
Canceling since a deadlock was detected for concurrency group:
'Fuzzer-82fa9862dfa3083d4014d6dcfb721a7278e66f0b' between a top level workflow and 'Fuzzing'
```
https://github.com/curl/curl/actions/runs/18778617351

Follow-up to 82fa9862dfa3083d4014d6dcfb721a7278e66f0b #19215

diff --git a/.github/workflows/fuzz.yml b/.github/workflows/fuzz.yml
index 98cdd8a97d0e921939c92f86cc8064d45fe502c8..eb4bd0dc887ba0caa778b4d490d733b73765138b 100644 (file)
--- a/.github/workflows/fuzz.yml
+++ b/.github/workflows/fuzz.yml
@@ -36,7 +36,8 @@ name: 'Fuzzer'
       - 'tests/data/**'
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
+  # Hard-coded workflow name to avoid colliding with curl-fuzzer's group
+  group: curl-fuzz-${{ github.event.pull_request.number || github.sha }}
   cancel-in-progress: true
 
 permissions: {}