Use generation datetime when recording meetings

[d1xlord]

fixes #49

[SakibulMowla]

Investigation on CI failure for this PR

• It's saying Missing credentials in config, if using AWS_CONFIG_FILE, set AWS_SDK_LOAD_CONFIG=1 which usually happens when the AWS secrets are missing. I've checked the repo Actions secrets and AWS secrets are still there.
• Tried running npm test locally and all tests passed.
• Tried running npm test locally on d1xlord:d1xlord/#49_all_meeting_same_timestamp and all tests passed.
• Tried updating the AWS secrets and CI run on the PR still failing after that.
• Tried running CI on main branch and all tests are passing which indicates the secrets are working fine.
• I was looking at the difference between PR CI run and main branch CI run. It looks like PR CI run is unable to access the secrets for some reason.

My suspicion is @d1xlord not being a collaborator of the repo is causing that. I've already sent an invitation to @d1xlord to make him a collaborator. I'll merge this PR and see what happens on main branch PR merge CI run.

[SakibulMowla]

Yeah, the main branch PR merge CI passed successfully. All is well.