Update Ruby version to 2.7.5 for tooling
Matches project to version of Ruby specified in gitlab
project: https://gitlab.com/gitlab-org/gitlab/-/blob/ea2e4f3d32f9c7cb65fe3533dd8075f9f58ec724/.tool-versions
Matches project to version of Ruby specified in gitlab
project: https://gitlab.com/gitlab-org/gitlab/-/blob/ea2e4f3d32f9c7cb65fe3533dd8075f9f58ec724/.tool-versions