Refactor Key event data for webhooks

Handle Rails 6.1 ActiveModel::Errors changes

See merge request gitlab-org/gitlab!59861

Add validation to fork form with validation directive

See merge request gitlab-org/gitlab!55838

Reduce number of SQL queries on SystemNote create

See merge request gitlab-org/gitlab!59102

Update testcase links to new ones

See merge request gitlab-org/gitlab!60067

Return connection error for activation

See merge request gitlab-org/gitlab!59840

Modal errors as objects are introduced:
https://github.com/rails/rails/pull/32313

model.errors.first returns ActiveModel::Error object
that's why model.errors.first[1] doesn't work in Rails 6.1

We need a way that works both for 6.1 and 6.0 in order to
introduce changes gradually:

model.errors.values.first works for both versions.

Even though treating errors as a hash is deprecated it works
so we can introduce the changes in 6.0 and then fix the
deprecations when we're on 6.1

(cherry picked from commit b5ecc309314429040921233d4a6216655fede089)

Avoid creating note in rollout issue

See merge request gitlab-org/gitlab!60083

Fix RSpec/EmptyLineAfterFinalLetItBe for ee/spec/lib/gitlab/elastic

See merge request gitlab-org/gitlab!58381

Merge branch '328564-use-a-correct-group-path-when-fetching-an-epic-in-graphql-boards' into 'master'

Use a correct group path when fetching epic in graphql boards

See merge request gitlab-org/gitlab!59937

Make external issue tracker docs consistent

See merge request gitlab-org/gitlab!59996

Fix LFS push mirroring for mirrors set up a long time ago

See merge request gitlab-org/gitlab!59972

Resolve "[VSA] "Days to completion" chart should display averages"

See merge request gitlab-org/gitlab!59453

Merge branch '293843-expand-filtering-functionality-of-vulnerabilities-graphql-endpoint-to-support-vendor-group-graphql' into 'master'

Add scannerId field to group vulnerabilities query

See merge request gitlab-org/gitlab!58156

Add support for setting DAST_API_SPECIFICATION

See merge request gitlab-org/gitlab!59719

Review and revise EWM integration UI text

See merge request gitlab-org/gitlab!59386

Merge branch '326751-refactor-issues-list-page-from-haml-to-vue-add-existing-filtered-search-components' into 'master'

Add author, assignee, and label tokens to issues list page refactor

See merge request gitlab-org/gitlab!59490

Geo - Add spec to avoid breaking the Geo replication for new upload types

See merge request gitlab-org/gitlab!59798

Remove unnecessary whitespace from end of lines

See merge request gitlab-org/gitlab!60076

Fix bug Swimlanes headers partially sticky

See merge request gitlab-org/gitlab!59944

Make migration pause time a configurable value

See merge request gitlab-org/gitlab!58583

Make the number of seconds to sleep in a batched_background_migration be
a configurable value. The pause_ms column is added to the database
to store this information, and it is now passed through to each job.

Update copy-webpack-plugin to 6.4.1

See merge request gitlab-org/gitlab!60061

Initialize conversion of ci_sources_pipelines.source_job_id to bigint

See merge request gitlab-org/gitlab!59951

Add FindingEvidenceRequest model

See merge request gitlab-org/gitlab!59539

Due to comment limit exceeded

Externalise strings in appearances/preview_sign_in.html.haml

See merge request gitlab-org/gitlab!58138

Add IterationCadenceDestroy mutation

See merge request gitlab-org/gitlab!59060