workflows: Add latest release to cross-version-verify (#1686)

Signed-off-by: Jussi Kukkonen <jkukkonen@google.com>
Co-authored-by: William Woodruff <william@trailofbits.com>

Author: jku

.github/workflows/cross-version-verify.yaml

@@ -58,7 +58,7 @@ jobs:
     strategy:
       fail-fast: false # Don't cancel other jobs if one fails
       matrix:
-        version: [3.5.6, 3.6.6, 4.0.0, 4.1.0]
+        version: [3.5.6, 3.6.6, 4.0.0, 4.1.0, 4.2.0]
     steps:
       - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
         with: