chore: add alpine:distro:alpine:3.19 namespace to quality gate (#416)

Alpine Linux 3.19 has been released, so adding the relevant namespace to
the vunnel quality gate config

Signed-off-by: Weston Steimel <[email protected]>

tests/quality/config.yaml

@@ -68,6 +68,7 @@ tests:
       - alpine:distro:alpine:3.16
       - alpine:distro:alpine:3.17
       - alpine:distro:alpine:3.18
+      - alpine:distro:alpine:3.19
       - alpine:distro:alpine:edge
 
   - provider: amazon