Execute a single mogrify command with multiple options rather than one command per option. Permit the use of all mogrify options, not just the ones that fall through to MiniMagick::Image#method_missing.

* If it raise error `Azure::Core::Http::HTTPError`, return `nil` instead of `false` in
  `ActiveStorage::Service::AzureStorageService#delete`.

* Other services behave as same as this.

* Removed webpack const, so it is assigned but never used in webpack.config.js.

The `keyfile` was renamed to `credentials` in `google-cloud-storage` 1.8.0.
https://github.com/GoogleCloudPlatform/google-cloud-ruby/blob/master/google-cloud-storage/CHANGELOG.md#180--2017-11-14

Although `keyfile` can still be used, but it looks like deprecate.
https://github.com/GoogleCloudPlatform/google-cloud-ruby/blob/ddf7b2a856d676316525eb581c1a4cc83ca6097b/google-cloud-storage/lib/google/cloud/storage.rb#L589...L590

Therefore, I think that should use `credentials` in newly generated
applications.

Ref: https://github.com/GoogleCloudPlatform/google-cloud-ruby/issues/1802

Fixes #31245

Permit creating a record and attaching files in a single step.

    # Before:
    User.create!(user_params.except(:avatar)).tap do |user|
      user.avatar.attach(user_params[:avatar])
    end

    # After:
    User.create!(user_params)

[Yoshiyuki Hirano & George Claghorn]

Disable CSRF protection for ActiveStorage::DiskController#update. The local disk service is intended to imitate a third-party service like S3 or GCS, so we don't care where direct uploads originate: they’re authorized by signed tokens.

Closes #30290.

[Shinichi Maeshima & George Claghorn]

Closes #31164.

Due to https://github.com/rack-test/rack-test/commit/5fd3631078e7c73aaed7d4371f70fb2a79384be9.

Closes #31138.

Closes #31073.

Related to #29417

Related to #29176

If a variant has a large set of options associated with it, the generated
filename will be too long, causing Errno::ENAMETOOLONG to be raised. This
change replaces those potentially long filenames with a much more compact
SHA256 hash. Fixes #30662.