SDK upgrade to v0.50 (branch) (#1611)

* Start implementation

* Add implementation + some e2e test

* Fix lint

* Squashed: sdk upgrade to v0.50

* rebuild protos with newer proto builder

(cherry picked from commit fd8f4c1d0d2163f0a504356c16cd2d250f6218f3)

* update ibc-go

(cherry picked from commit fb8667960fbeedb7d242baa644572986a154d4b6)

* bump cosmos-sdk and ibc in the v50 branch (#1616)

* tidy

* upgade ibc

* remove the toolchain command

* Bump sdk version

* Use correct bech32 prefix

* Bump SDK

* Enable fraud system test again

* Fix genesis param name

* Fix import/export simulations

* set log level for benchmarks

(cherry picked from commit 1cfb93008c596db62d22aba882f37a469546bfb9)

* Apply review comments

* Remove gov beta1 helpers

* Bump sdk version to latest in branch

* Fix linter

* Setup mergify for main

* Update mergify for better branch name

---------

Co-authored-by: Pino' Surace <pino.surace@live.it>
Co-authored-by: Jacob Gadikian <jacobgadikian@gmail.com>

.mergify.yml

@@ -6,7 +6,7 @@ queue_rules:
 pull_request_rules:
   - name: backport patches to main branch
     conditions:
-      - base=releases/v0.40.x
+      - base=releases/v0.4x
       - label=backport/main
     actions:
       backport:
@@ -20,11 +20,11 @@ pull_request_rules:
       backport:
         branches:
           - releases/v0.3x
-  - name: backport patches to v0.40.x release branch
+  - name: backport patches to sdk47 release branch
     conditions:
       - base=main
-      - label=backport/v0.40.x
+      - label=backport/v0.4x
     actions:
       backport:
         branches:
-          - releases/v0.40.x
+          - releases/v0.4x