proxy: v2.167.0 (#7319)

This release improves error logging when the proxy fails to accept a
connection due to an operating system error.

---

* build(deps): bump deflate from 0.9.1 to 1.0.0 (linkerd/linkerd2-proxy#1370)
* Eliminate needless compiler directives (linkerd/linkerd2-proxy#1371)
* transport: Improve TCP server error messages (linkerd/linkerd2-proxy#1372)
* build(deps): bump softprops/action-gh-release from 0.1.13 to 1 (linkerd/linkerd2-proxy#1374)
* build(deps): bump serde_json from 1.0.69 to 1.0.70 (linkerd/linkerd2-proxy#1375)
* build(deps): bump arbitrary from 1.0.2 to 1.0.3 (linkerd/linkerd2-proxy#1376)
* ci: Fix coverage workflow (linkerd/linkerd2-proxy#1373)
* build(deps): bump various dependencies (linkerd/linkerd2-proxy#1377)
* build(deps): bump tokio from 1.13.0 to 1.14.0 (linkerd/linkerd2-proxy#1379)
* app: Move retry types into the app-outbound crate (linkerd/linkerd2-proxy#1378)
* build(deps): bump hyper from 0.14.14 to 0.14.15 (linkerd/linkerd2-proxy#1381)

.proxy-version

@@ -1 +1 @@
-v2.166.0
+v2.167.0