fix(rfc): Handle nil reader and empty response (darkweak#172)

* fix(rfc): Handler nil reader and empty response

* Handle another way inexistent (S)MaxAge props

fix(core): Vary voter election (darkweak#168)

fix(plugins): Traefik custom writer (darkweak#161)

* fix(plugins): Traefik custom writer

* Update and prepare v1.5.11-beta6

Prepare v1.5.11-beta5 (darkweak#160)

* Prepare v1.5.11-beta5

* Update e2e

* Replace the embedded Olric to go-cache to fix issues on start

* Ensure Tyk loads Souin

* Vendor plugins if necessary

Use TLS port from config (darkweak#155)

* Move first call into for

* Use TLS port from config

Instead of hardcoded 443

* Update credits

Remove linux/riscv64 from BuildX (darkweak#153)

alpine image is not compiled for this arch

Update goreleaser (darkweak#148)

Prepare v1.5.10 (darkweak#136)

Use Routripper interface instead of custom function (darkweak#133)

Bump dependencies for plugins to core v1.5.7 (darkweak#132)

* Bump dependencies for plugins

* Update github workflows