[Security] Bump rails from 5.1.6.1 to 5.1.6.2

[dependabot-preview[bot]]

Bumps rails from 5.1.6.1 to 5.1.6.2. This update includes security fixes.

Vulnerabilities fixed

*Sourced from The GitHub Security Advisory Database.* > **Critical severity vulnerability that affects actionview** > # Denial of Service Vulnerability in Action View > > Impact > ------ > Specially crafted accept headers can cause the Action View template location > code to consume 100% CPU, causing the server unable to process requests. This > impacts all Rails applications that render views. > > All users running an affected release should either upgrade or use one of the > workarounds immediately. > > Releases > -------- > The 6.0.0.beta3, 5.2.2.1, 5.1.6.2, 5.0.7.2, and 4.2.11.1 releases are > available at the normal locations. > > Workarounds > ----------- > This vulnerability can be mitigated by wrapping `render` calls with > `respond_to` blocks. For example, the following example is vulnerable: > ... (truncated) > > Affected versions: >= 5.1.0, <= 5.1.6.1 *Sourced from The GitHub Security Advisory Database.* > **High severity vulnerability that affects actionview** > # File Content Disclosure in Action View > > Impact > ------ > There is a possible file content disclosure vulnerability in Action View. > Specially crafted accept headers in combination with calls to `render file:` > can cause arbitrary files on the target server to be rendered, disclosing the > file contents. > > The impact is limited to calls to `render` which render file contents without > a specified accept format. Impacted code in a controller looks something like > this: > > ``` > class UserController < ApplicationController > def index > render file: "#{Rails.root}/some/file" > end > end > ``` > ... (truncated) > > Affected versions: >= 5.1.0, <= 5.1.6.1

Commits

- [`ec8697b`](https://github.com/rails/rails/commit/ec8697bf0bfafff7d897fb50e322afe42ddc1623) Prep release - [`92c025d`](https://github.com/rails/rails/commit/92c025d7f17ff256ac50f5e3bc014bb1a016d1ec) Only accept formats from registered mime types - See full diff in [compare view](https://github.com/rails/rails/compare/v5.1.6.1...v5.1.6.2)

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[dependabot-preview[bot]]

Superseded by #319.