[Security] Bump rack from 2.0.4 to 2.0.7

[dependabot-preview[bot]]

Bumps rack from 2.0.4 to 2.0.7. This update includes security fixes.

Vulnerabilities fixed

*Sourced from [The Ruby Advisory Database](https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2018-16470.yml).* > **Possible DoS vulnerability in Rack** > There is a possible DoS vulnerability in the multipart parser in Rack. This > vulnerability has been assigned the CVE identifier CVE-2018-16470. > > Versions Affected: 2.0.4, 2.0.5 > Not affected: <= 2.0.3 > Fixed Versions: 2.0.6 > > Impact > ------ > There is a possible DoS vulnerability in the multipart parser in Rack. > Carefully crafted requests can cause the multipart parser to enter a > pathological state, causing the parser to use CPU resources disproportionate to > the request size. > > Impacted code can look something like this: > > ``` > Rack::Request.new(env).params > ``` > > ... (truncated) > > Patched versions: >= 2.0.6 > Unaffected versions: <= 2.0.3 *Sourced from [The Ruby Advisory Database](https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2018-16471.yml).* > **Possible XSS vulnerability in Rack** > There is a possible vulnerability in Rack. This vulnerability has been > assigned the CVE identifier CVE-2018-16471. > > Versions Affected: All. > Not affected: None. > Fixed Versions: 2.0.6, 1.6.11 > > Impact > ------ > There is a possible XSS vulnerability in Rack. Carefully crafted requests can > impact the data returned by the `scheme` method on `Rack::Request`. > Applications that expect the scheme to be limited to "http" or "https" and do > not escape the return value could be vulnerable to an XSS attack. > > Vulnerable code looks something like this: > > ``` > <%= request.scheme.html_safe %> > ``` > > ... (truncated) > > Patched versions: \~> 1.6.11; >= 2.0.6 > Unaffected versions: none

Commits

- [`7fb95db`](https://github.com/rack/rack/commit/7fb95dbec28dc70f3cfbba0a684db0735d8ab2ca) Bumping to 2.0.7 for release - [`ea57610`](https://github.com/rack/rack/commit/ea576109c1b9fd444e6f0e728f8db74c33786674) Merge pull request [#1343](https://github-redirect.dependabot.com/rack/rack/issues/1343) from larsxschneider/ls/forward-fix - [`1bf2188`](https://github.com/rack/rack/commit/1bf218818502e820192a41c4da61aa0b0b6109af) Preserve forwarded IP address for trusted proxy chains - [`cb1fdb6`](https://github.com/rack/rack/commit/cb1fdb600bc525258b3c34ea95f1598ee6def9c6) Merge pull request [#1201](https://github-redirect.dependabot.com/rack/rack/issues/1201) from janko-m/make-multipart-parsing-work-for-chunked... - [`8376dd1`](https://github.com/rack/rack/commit/8376dd11e6526a53432ee59b7a5d092bda9fc901) Bumping version for release - [`313dd6a`](https://github.com/rack/rack/commit/313dd6a05a5924ed6c82072299c53fed09e39ae7) Whitelist http/https schemes - [`37c1160`](https://github.com/rack/rack/commit/37c1160b2360074d20858792f23a7eb3afeabebd) Reduce buffer size to avoid pathological parsing - [`99fea65`](https://github.com/rack/rack/commit/99fea65cc04eaaad8e59b1a78440a2616e0dc55a) Merge tag '2.0.5' into 2-0-stable - [`216b7ca`](https://github.com/rack/rack/commit/216b7cad1baa65ba1213ae51c85776928d6e2d86) Merge pull request [#1296](https://github-redirect.dependabot.com/rack/rack/issues/1296) from tomelm/fix-prefers-plaintext - [`decd976`](https://github.com/rack/rack/commit/decd97682ec4c6345fe359b6a1d3c51e5fbdce5b) Bump version for release - Additional commits viewable in [compare view](https://github.com/rack/rack/compare/2.0.4...2.0.7)

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Dependabot will merge this PR once CI passes on it, as requested by @captn3m0.

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[captn3m0]

@dependabot merge

[dependabot-preview[bot]]

Looks like rack is up-to-date now, so this is no longer needed.