[Github] Bump Windows Actions Runner to v2.321.0

The current container is on an old version that can no longer recieve messages
from Github, which causes the runner to just be recreated every couple seconds
rather than performing any useful work.

Author: boomanaiden154

.github/workflows/containers/github-action-ci-windows/Dockerfile

@@ -108,7 +108,7 @@ RUN choco install -y handle
 
 RUN pip3 install pywin32 buildbot-worker==2.8.4
 
-ARG RUNNER_VERSION=2.319.1
+ARG RUNNER_VERSION=2.321.0
 ENV RUNNER_VERSION=$RUNNER_VERSION
 
 RUN powershell -Command \