ci: fix no release note on day after no commit

[scarf005]

Checklist

Required

• I wrote the PR title in conventional commit format.
• I ran the code formatter.
• I linked any relevant issues using github keyword syntax so it can be closed automatically.
• I have committed my changes to new branch that isn't main so it won't cause conflict when updating main branch later.

Purpose of change

fix generation of empty release note on daily release when yesterday had no release (this is because in that case nonexistant tag is passed to fromTag)

Describe the solution

1. compare with tag of last release, not from the day before.
2. always create/update releases so release note can be updated when manually ran.

Describe alternatives you've considered

remove usage of YESTERDAY_TAG_NAME completely? head foggy so not sure if it'd work

Testing

• ran https://github.com/cataclysmbnteam/Cataclysm-BN/actions/runs/9950837172/job/27489346015
• it correctly updated previously empty release note of https://github.com/cataclysmbnteam/Cataclysm-BN/releases/tag/2024-07-15
• existing release assets were kept intact.

Additional context