Merge branch 'eread/add-mage-to-project-dependencies' into 'main'

Add mage to project dependencies

See merge request https://gitlab.com/gitlab-org/gitlab-runner/-/merge_requests/6348

Merged-by: Tomasz Maczukin <tomasz@maczukin.pl>
Approved-by: Tomasz Maczukin <tomasz@maczukin.pl>
Co-authored-by: Evan Read <eread@gitlab.com>

Author: tmaczukin

.tool-versions

@@ -2,6 +2,7 @@
 golang 1.25.5
 yq 4.44.3
 mockery 2.53.3
+mage 1.15.0
 
 # For linting documentation
 markdownlint-cli2 0.19.0