Bump GitVersionTask from 5.5.0 to 5.5.1
Bump GitVersionTask from 5.5.0 to 5.5.1

Bumps [GitVersionTask](https://github.com/GitTools/GitVersion) from 5.5.0 to 5.5.1.
- [Release notes](https://github.com/GitTools/GitVersion/releases)
- [Changelog](https://github.com/GitTools/GitVersion/blob/master/BREAKING_CHANGES.md)
- [Commits](https://github.com/GitTools/GitVersion/compare/5.5.0...5.5.1)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
y-iihoshi/ThScoreFileConverter,y-iihoshi/ThScoreFileConverter