fix(renovate): fix truncated version updates for common-ci-tasks CI includes

What

Fix truncated version updates for common-ci-tasks CI includes by keeping the v prefix in the extracted version.

Why

Renovate is no longer able to update common-ci-tasks since my initial fix in !816 (merged):

EBUG: Starting search at index 893 (repository=gitlab-com/gl-infra/terra-transformer, packageFile=.pre-commit-config.yaml, branch=renovate/common-ci-tasks)
       "depName": "gitlab-com/gl-infra/common-ci-tasks"
DEBUG: Found match at index 893 (repository=gitlab-com/gl-infra/terra-transformer, packageFile=.pre-commit-config.yaml, branch=renovate/common-ci-tasks)
       "depName": "gitlab-com/gl-infra/common-ci-tasks"
DEBUG: Found version v5.0.0 (repository=gitlab-com/gl-infra/terra-transformer, branch=renovate/common-ci-tasks)
DEBUG: Found github dependency (repository=https://github.com/pre-commit/pre-commit-hooks, branch=renovate/common-ci-tasks)
DEBUG: Found version 2.51 (repository=gitlab-com/gl-infra/terra-transformer, branch=renovate/common-ci-tasks)
DEBUG: Found gitlab dependency (repository=https://gitlab.com/gitlab-com/gl-infra/common-ci-tasks, branch=renovate/common-ci-tasks)
DEBUG: Contents updated (repository=gitlab-com/gl-infra/terra-transformer, packageFile=.pre-commit-config.yaml, branch=renovate/common-ci-tasks)
       "depName": "gitlab-com/gl-infra/common-ci-tasks"
DEBUG: Value is not updated (repository=gitlab-com/gl-infra/terra-transformer, packageFile=.gitlab-ci.yml, branch=renovate/common-ci-tasks)
       "depName": "gitlab-com/gl-infra/common-ci-tasks",
       "manager": "gitlabci-include",
       "expectedValue": "2.51",
       "foundValue": "v2.44"
DEBUG: Starting search at index 661 (repository=gitlab-com/gl-infra/terra-transformer, packageFile=.gitlab-ci.yml, branch=renovate/common-ci-tasks)
       "depName": "gitlab-com/gl-infra/common-ci-tasks"
DEBUG: Found match at index 661 (repository=gitlab-com/gl-infra/terra-transformer, packageFile=.gitlab-ci.yml, branch=renovate/common-ci-tasks)
       "depName": "gitlab-com/gl-infra/common-ci-tasks"
DEBUG: Value is not updated (repository=gitlab-com/gl-infra/terra-transformer, packageFile=.gitlab-ci.yml, branch=renovate/common-ci-tasks)
       "depName": "gitlab-com/gl-infra/common-ci-tasks",
       "manager": "gitlabci-include",
       "expectedValue": "2.51",
       "foundValue": "v2.44"
DEBUG: Found match at index 967 (repository=gitlab-com/gl-infra/terra-transformer, packageFile=.gitlab-ci.yml, branch=renovate/common-ci-tasks)
       "depName": "gitlab-com/gl-infra/common-ci-tasks"
DEBUG: Value is not updated (repository=gitlab-com/gl-infra/terra-transformer, packageFile=.gitlab-ci.yml, branch=renovate/common-ci-tasks)
       "depName": "gitlab-com/gl-infra/common-ci-tasks",
       "manager": "gitlabci-include",
       "expectedValue": "2.51",
       "foundValue": 2.51
 WARN: Error updating branch: update failure (repository=gitlab-com/gl-infra/terra-transformer, branch=renovate/common-ci-tasks)

https://gitlab.com/gitlab-com/gl-infra/terra-transformer/-/jobs/8937781933