chore(deps)!: bump h2 from 0.5.10 to 0.6.2 (#4460)

this crate updates the `h2` crate.

while this is mechanically a routine dependency upgrade, this contains
some noteworthy bug fixes that are worth calling out. see
linkerd/linkerd2#14800 for additional
context.

see hyperium/h2#858 and hyperium/h2#860.

> We don't want to remember the streams for forever, that would cause
> memory to grow. Nor do we want to accept frames on those streams
> without limit, since that would waste resources. Thus, we limit how
> much we remember, by stream count and duration.
>
> This PR changes the defaults to be something perhaps a little more
> reasonable:
>
> * 50 streams, a conservative amount of half of the recommending
>   minimum concurrent streams any remote SHOULD support.
>
> * 1 second, since the RFC only suggests about 1 RTT. We don't keep
>   track of RTT, but even p99 RTT is around 250ms, maybe 500ms.

because this PR changes some defaults in `h2`, this is marked as a
"breaking" change.

this fixes linkerd/linkerd2#14908.

X-ref: linkerd/linkerd2#14908
X-ref: hyperium/h2#858
X-ref: hyperium/h2#860
X-ref: hyperium/h2#853
X-ref: linkerd/linkerd2#14800

Signed-off-by: katelyn martin <kate@buoyant.io>

Author: cratelyn

Cargo.lock

@@ -838,9 +838,9 @@ dependencies = [
 
 [[package]]
 name = "h2"
-version = "0.4.11"
+version = "0.4.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17da50a276f1e01e0ba6c029e47b7100754904ee8a278f886546e98575380785"
+checksum = "2f44da3a8150a6703ed5d34e164b875fd14c2cdab9af1252a9a1020bde2bdc54"
 dependencies = [
  "atomic-waker",
  "bytes",
@@ -1040,7 +1040,7 @@ dependencies = [
  "hyper",
  "libc",
  "pin-project-lite",
- "socket2 0.6.2",
+ "socket2 0.5.10",
  "tokio",
  "tower-service",
  "tracing",