[CI] apt install step fails randomly

[mmurooka]

From a few days ago, the following error occurred more frequently in the apt install step of CI. Because many jobs are executed from the strategy matrix, there is more than half a chance that the CI will fail now.

https://github.com/isri-aist/BaselineWalkingController/actions/runs/3880836425/jobs/6619243801

E: Failed to fetch http://azure.archive.ubuntu.com/ubuntu/pool/universe/e/eigen3/libeigen3-dev_3.3.4-4_all.deb  503  Service Unavailable [IP: 40.119.46.219 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
Error: Process completed with exit code 100.

[gergondet]

I have noticed the same things in other workflows over the past few days. It seems to have been reported here actions/runner-images#6894

I have setup the retry workaround for our actions on GitHub hosted runners which should hopefully do the trick jrl-umi3218/github-actions@3f1a285

[mmurooka]

Thank you for your reply. This problem has not occurred recently, so I will close it.