build(deps): bump boring from 1.1.6 to 2.0.0 (#1413)

Bumps [boring](https://github.com/cloudflare/boring) from 1.1.6 to 2.0.0.
- [Release notes](https://github.com/cloudflare/boring/releases)
- [Changelog](https://github.com/cloudflare/boring/blob/master/CHANGELOG.md)
- [Commits](https://github.com/cloudflare/boring/commits)

---
updated-dependencies:
- dependency-name: boring
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Oliver Gould <ver@buoyant.io>
(cherry picked from commit 6cab4bb)
Signed-off-by: Oliver Gould <ver@buoyant.io>

deny.toml

@@ -47,8 +47,10 @@ highlight = "all"
 deny = [
     { name = "rustls", wrappers = ["tokio-rustls"] }
 ]
-skip = []
-skip-tree = []
+skip-tree = [
+    # Hasn't seen a new release since 2017. Pulls in an older version of nom.
+    { name = "procinfo" }
+]
 
 [sources]
 unknown-registry = "deny"