Updated HTTP/2 pseudo-headers enforcement logic
This release contains a bug fix for #252 to fix the way Proxy Verifier relates to pseudo header fields for HTTP/2 CONNECT requests.
This also updates the library dependencies as follows:
- openssl: 1.1.1u
- nghttp2: v1.54.0
- ngtcp2: v0.15.0
- nghttp3: v0.11.0
This also updates the Proxy Verifier autests to support Python 3.11.