Bump x509-limbo and/or wycheproof in CI (#13139)

Co-authored-by: pyca-boringbot[bot] <pyca-boringbot[bot][email protected]>

Author: pyca-boringbot[bot]

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

@@ -9,8 +9,8 @@ runs:
       with:
         repository: "C2SP/wycheproof"
         path: "wycheproof"
-        # Latest commit on the wycheproof main branch, as of May 21, 2025.
-        ref: "4a6c2bf5dc4c0b67c770233ad33961ee653996a0" # wycheproof-ref
+        # Latest commit on the wycheproof main branch, as of Jul 03, 2025.
+        ref: "9ff10ee70b61f3ab08210ff7bb0352fcec4ea03e" # wycheproof-ref
 
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       with: