fix: restore no_std support for serde feature (#790)

* fix: restore no_std support for serde feature

* deps: bump ibc-proto-rs to v0.34.0

* fix: reflect changes b/c of ibc-proto-rs

* imp: comply naming + use better domain type for host_consensus_state

* fix: apply host_cons_state_proof changes for conn_open_ack

* fix: use domain TmEvent instead of proto for upgrade client proposal handler

* misc: add a unclog for ibc-proto-rs upgrade

Author: Farhad-Shabani

.changelog/unreleased/breaking-changes/790-bump-ibc-proto-rs-to-v0.34.0.md

@@ -0,0 +1,2 @@
+- Bump ibc-proto-rs to v0.34.0 
+  ([#790](https://github.com/cosmos/ibc-rs/issues/790))

.changelog/unreleased/bug-fixes/741-restore-no-std-support.md

@@ -0,0 +1,2 @@
+- Fix compilation error of v0.41.0 by restoring no_std support for serde
+  feature ([#741](https://github.com/cosmos/ibc-rs/issues/741))

.changelog/unreleased/improvements/838-switch-to-tm-event-for-upgrade-client-proposal-handler.md

@@ -0,0 +1,3 @@
+- Switch to domain Tendermint event type instead of proto for the
+  `upgrade_client_proposal_handler` return
+  ([#838](https://github.com/cosmos/ibc-rs/issues/838))