added spec to check for `head` file

Bump `parser` gem to 2.5.0.5

See merge request gitlab-org/gitlab-ce!18237

1. Synchronize used version of `parser` gem for both versions of rails: 4 and 5.
2. Fix broken CI pipelines for rails5 branches.

The 2.5.0.4 version is removed from rubygems, so it's skipped.
https://github.com/whitequark/parser/issues/478

Fix Prometheus dashboard sorting

See merge request gitlab-org/gitlab-ce!18233

Fix the reCAPTCHA spec failures by not rendering the widget in test mode

Closes #45138

See merge request gitlab-org/gitlab-ce!18235

Resolve "Wrong empty state for cancelled build, hides existing logs!"

Closes #42568

See merge request gitlab-org/gitlab-ce!17646

Add Kubernetes CPU/Mem usage totals

See merge request gitlab-org/gitlab-ce!17731

fixed files getting into an opened & active state when it shouldnt

Repository checksum calculation is handled by Gitaly when feature is enabled

See merge request gitlab-org/gitlab-ce!18210

We've seen changes in behavior in the reCAPTCHA widget that led to test failures.
To avoid these issues, don't render the widget at all in test mode.

Closes #45138

Add summary statistics to the prometheus dashboard

Closes #43973

See merge request gitlab-org/gitlab-ce!17921

Web IDE blob image + default fallback

See merge request gitlab-org/gitlab-ce!18186

Resolve "Create cop for FactoryBot methods used in migration specs"

Closes #42090

See merge request gitlab-org/gitlab-ce!18108

Add support for patch link extension for commit links on GFM

Closes #17939

See merge request gitlab-org/gitlab-ce!18229

Fix 500 error when MR from fork has conflicts but worker has not run

See merge request gitlab-org/gitlab-ce!18226

Automatically cleanup stale worktrees and lock files upon a push

Closes #44115

See merge request gitlab-org/gitlab-ce!18095

Stop redirecting the page in graph main actions

See merge request gitlab-org/gitlab-ce!18185

Signed-off-by: Rémy Coutable <remy@rymai.me>

Signed-off-by: Rémy Coutable <remy@rymai.me>

Extend API for importing a project export with overwrite support

Closes #41900

See merge request gitlab-org/gitlab-ce!17883