Bump apps/mastodon from `0f38f97` to `a55ad84`
Bump apps/mastodon from `0f38f97` to `a55ad84`

Bumps [apps/mastodon](https://github.com/tootsuite/mastodon) from `0f38f97` to `a55ad84`.
- [Release notes](https://github.com/tootsuite/mastodon/releases)
- [Commits](https://github.com/tootsuite/mastodon/compare/0f38f9726a0a9d8e13633424d03e79f54df047a4...a55ad84251fe9f00e095509d82db8e7e77f57813)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
eliotsykes/real-world-rails