www/gitlab-ce: Update to 14.8.0

Changelog:
https://about.gitlab.com/releases/2022/02/22/gitlab-14-8-released/

GitLab chart improvements (self-managed only): Cloud Native Installation

Omnibus improvements (self-managed only): Omnibus Package

Invite members and groups by using a modal: Authentication and Authorization

Manage

Delete groups at the parent group level: Subgroups

Support for ecdsa-sk and ed25519-sk SSH keys: Authentication and Authorization

Plan

Add default issue and merge request templates in a project's repository: Team Planning

Create

Improved cleanup of gitconfig file: Gitaly

Verify

View read-only runner details in the Admin Area (self-managed only): GitLab Runner

Use the CI Lint API with other branches or tags: Pipeline Authoring

Improve pipeline index page layout: Continuous Integration (CI)

GitLab Runner 14.8: GitLab Runner

Auto-completion of keywords in the Pipeline Editor: Pipeline Authoring

Secure

Static Analysis analyzer updates: SAST, Secret Detection

SAST severities now available for .NET: SAST

Release

Set custom rate limiting for GitLab Pages: Pages

Latest Release badge for the project: Release Orchestration

Configure

The agent server for Kubernetes is enabled by default (self-managed only): Infrastructure as Code