fix[fuzz]: longer retention for outputs (#6402)

Signed-off-by: Joe Isaacs <joe.isaacs@live.co.uk>

Author: joseph-isaacs

.github/workflows/run-fuzzer.yml

@@ -157,15 +157,15 @@ jobs:
         with:
           name: ${{ inputs.fuzz_target }}-crash-artifacts
           path: fuzz/artifacts
-          retention-days: 30
+          retention-days: 180
 
       - name: Archive fuzzer output log
         if: steps.check.outputs.crashes_found == 'true'
         uses: actions/upload-artifact@v5
         with:
           name: ${{ inputs.fuzz_target }}-logs
           path: fuzz_output.log
-          retention-days: 30
+          retention-days: 90
 
       - name: Persist corpus
         shell: bash