proxy: v2.162.0 (#7052)

This release updates the `h2` crate to support HTTP/2 messages with
large header values.

Legacy support for TLSv1.2 has been removed. Now the proxy only uses
TLSv1.3 for mTLS communication.  Also, gateway proxies now only support
clients that use the `transport.l5d.io` protocol, negotiated via ALPN.
With these changes, older clients (before ~v2.133.0) are no longer
supported by new servers.

---

* build(deps): bump libc from 0.2.102 to 0.2.103 (linkerd/linkerd2-proxy#1290)
* build(deps): bump trust-dns-resolver (linkerd/linkerd2-proxy#1291)
* build(deps): bump h2 from 0.3.4 to 0.3.6 (linkerd/linkerd2-proxy#1293)
* admin: Remove unused types (linkerd/linkerd2-proxy#1294)
* Remove use of TLS 1.2 (linkerd/linkerd2-proxy#1296)
* gateway: Require ALPN on gateway connections (linkerd/linkerd2-proxy#1297)
* Always enable identity in integration tests (linkerd/linkerd2-proxy#1298)
* tracing: use `Option`s as `tracing` values (linkerd/linkerd2-proxy#1299)
* build(deps): bump tracing-subscriber from 0.2.24 to 0.2.25 (linkerd/linkerd2-proxy#1300)

.proxy-version

@@ -1 +1 @@
-v2.161.0
+v2.162.0