v0.17.4

Changelog

• 734679f add --fetch flag to git spr update command
• d79b50e add no-fetch flag to spr update
• d47b630 chore: update readme
• b01881d feat: make branch prefix configurable
• 56fd555 first try to get the user's github token using the secured keychain, falling back to the plaintext entry in hosts.yml
• 23d7edd fix double github actions trigger on git spr update
• 606df43 fix spr edit commit sqaush bug
• c85920f update nix flake hash