Bump x509-limbo and/or wycheproof in CI (#11582)

Co-authored-by: pyca-boringbot[bot] <pyca-boringbot[bot]+106132319@users.noreply.github.com>

Author: pyca-boringbot[bot]

.github/actions/fetch-vectors/action.yml

@@ -16,5 +16,5 @@ runs:
       with:
         repository: "C2SP/x509-limbo"
         path: "x509-limbo"
-        # Latest commit on the x509-limbo main branch, as of Sep 10, 2024.
-        ref: "d82632e093600790dfb59ac4d0c2678f4eb58128" # x509-limbo-ref
+        # Latest commit on the x509-limbo main branch, as of Sep 11, 2024.
+        ref: "c9d011c6b696074a5a636c7cd40df8e4bd3cd67b" # x509-limbo-ref