ci: Skip running ctest on ppc64le-musl

The issue building rustix that we hit with loongarch is now being hit
with ppc64le.

Author: tgross35

ci/run.sh

@@ -28,8 +28,9 @@ esac
 case "$target" in
     # crash in std::env::tmp_dir (no filesystem on wasm).
     *wasm*) cmd="$cmd --exclude ctest --exclude ctest-test --exclude ctest-next" ;;
+    # Loongarch was fixed, but there are new instances of
     # https://github.com/bytecodealliance/rustix/issues/1496
-    *loongarch*) cmd="$cmd --exclude ctest --exclude ctest-test --exclude ctest-next" ;;
+    powerpc64le*musl) cmd="$cmd --exclude ctest --exclude ctest-test --exclude ctest-next" ;;
 esac
 
 # shellcheck disable=SC2086