Merge branch 'brent/cleanup-dependencies' (#3218)

* origin/brent/cleanup-dependencies:
  changelog: add #3218
  respond to comments
  upgrade tracing-log
  use updated fork of tiny-hderive
  use regex workspace
  de-duplicate itertools by upgrading itself and tonic-build
  upgrade ed25519-consensus
  replace dep `parse_duration` with `duration-str`
  update shlex
  update rustls
  update mio
  update libgit2-sys
  update h2
  update eyre
  remove unused dependencies

.changelog/unreleased/improvements/3218-cleanup-dependencies.md

@@ -0,0 +1,3 @@
+- Dependency cleanup: remove unused ones, upgrade those with
+  security vulnerabilities, reduce the number of transitive deps.
+  ([\#3218](https://github.com/anoma/namada/pull/3218))