deps(http-proxy): update dashmap, twilight, metrics-exporter-prometheus

[AEnterprise]

Update to latest twilight, use a dashmap version with the sanity fixes

[Gelbpunkt]

$ cargo outdated -wR
twilight-http-proxy
================
Name                         Project  Compat  Latest  Kind    Platform
----                         -------  ------  ------  ----    --------
hyper-trust-dns              0.3.1    ---     0.4.2   Normal  ---
metrics-exporter-prometheus  0.8.0    ---     0.9.0   Normal  ---
twilight-http-ratelimiting   0.9.0    ---     0.11.0  Normal  ---

I suggest bumping hyper-trust-dns too

[Erk-]

Could you pull the changes and update the API version in the readme to 10