Bump x509-limbo and/or wycheproof in CI (#13491)

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

Author: pyca-boringbot[bot]

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

@@ -17,6 +17,6 @@ runs:
       with:
         repository: "C2SP/x509-limbo"
         path: "x509-limbo"
-        # Latest commit on the x509-limbo main branch, as of Sep 17, 2025.
-        ref: "119aa0de18bcc75ce760dc72c6f848daf1446626" # x509-limbo-ref
+        # Latest commit on the x509-limbo main branch, as of Sep 23, 2025.
+        ref: "65a17a59c2d8db6db429d859bdd27c06fb21c32d" # x509-limbo-ref
         persist-credentials: false