Update dependabot-omnibus requirement from ~> 0.363.0 to ~> 0.364.0 (#2590)

Updates the requirements on [dependabot-omnibus](https://github.com/dependabot/dependabot-core) to permit the latest version.
- [Release notes](https://github.com/dependabot/dependabot-core/releases)
- [Changelog](https://github.com/dependabot/dependabot-core/blob/main/CHANGELOG_ARCHIVE_2019_TO_SWITCH_TO_GITHUB_RELEASES.md)
- [Commits](dependabot/dependabot-core@v0.363.0...v0.364.0)

---
updated-dependencies:
- dependency-name: dependabot-omnibus
  dependency-version: 0.364.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

packages/runner/upstream/Gemfile

@@ -7,4 +7,4 @@ source "https://rubygems.org"
 # A lock file is missing intentionally.
 # There is no lockfile because we are only interested in tracking gem version changes.
 
-gem "dependabot-omnibus", "~> 0.363.0"
+gem "dependabot-omnibus", "~> 0.364.0"