workflows/fuzzing.yml: Add timeout equal to total run time

Just in case some of the values cause an infinite loop (or at
least take a _very_ long time, see #7708), timeout, with the same
duration as the maximum total fuzzing time.

That'll allow us to _see_ what input causes the infinite loop.

Author: drinkcat

.github/workflows/fuzzing.yml

@@ -84,7 +84,7 @@ jobs:
       shell: bash
       continue-on-error: ${{ !matrix.test-target.name.should_pass }}
       run: |
-        cargo +nightly fuzz run ${{ matrix.test-target.name }} -- -max_total_time=${{ env.RUN_FOR }} -detect_leaks=0
+        cargo +nightly fuzz run ${{ matrix.test-target.name }} -- -max_total_time=${{ env.RUN_FOR }} -timeout=${{ env.RUN_FOR }} -detect_leaks=0
     - name: Save Corpus Cache
       uses: actions/cache/save@v4
       with: