update github.com/rs/cors to v1.11.0

[dmitris]

The update is to fix the dependabot issue triggered by the github.com/rs/cors version prior to v1.11.0. I wonder why the dependabot didn't pick it and didn't propose an autoupdate PR in this repository - do you know, by any chance?

Middleware causes a prohibitive amount of heap allocations when processing malicious preflight requests that include an Access-Control-Request-Headers (ACRH) header whose value contains many commas. This behavior can be abused by attackers to produce undue load on the middleware/server as an attempt to cause a denial of service.

References: rs/cors#145, rs/cors#173

[bsardo]

Hi @dmitris, I'm also not sure why dependabot did not open a PR for us. We do have dependabot alerts enabled and I do see a rule that it will ignore low priority vulnerabilities. I can't find where the priority is defined on this to determine whether that is the reason a PR was not opened.

[guscarreon]

LGTM