build(deps): bump h2 from 0.3.6 to 0.3.7 (#1324)

Bumps [h2](https://github.com/hyperium/h2) from 0.3.6 to 0.3.7.
- [Release notes](https://github.com/hyperium/h2/releases)
- [Changelog](https://github.com/hyperium/h2/blob/master/CHANGELOG.md)
- [Commits](hyperium/h2@v0.3.6...v0.3.7)

---
updated-dependencies:
- dependency-name: h2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
(cherry picked from commit cda9473)
Signed-off-by: Oliver Gould <ver@buoyant.io>

Cargo.lock

@@ -332,9 +332,9 @@ dependencies = [
 
 [[package]]
 name = "h2"
-version = "0.3.6"
+version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c06815895acec637cd6ed6e9662c935b866d20a106f8361892893a7d9234964"
+checksum = "7fd819562fcebdac5afc5c113c3ec36f902840b70fd4fc458799c8ce4607ae55"
 dependencies = [
  "bytes",
  "fnv",