test(live): disable IPv6 tests

Author: coderbyheart

.github/workflows/live-test.yaml

@@ -31,6 +31,8 @@ jobs:
   test-ipv6:
     # openresolv is not available on ubuntu-24.04
     runs-on: ubuntu-22.04
+    # Disabled: https://github.com/NordicPlayground/nordic-developer-academy-udp-echo/issues/1
+    if: false
 
     env:
       HOSTNAME: udp-echo.nordicsemi.academy