prepare changelog for v8.5.1 release

[backport v6.2.x] imp(core): allow huckleberry events with a prefix (#…

…5541) (#7260)

* imp(core): allow huckleberry events with a prefix (#5541)

* feat: initial impl

* imp: moved event helpers to types and added tests

* imp(testing): added mock events to mock module

* test: added msg_server tests for application events

* imp: converted suffix to prefix

* docs: updated inline comments

* imp: review item

* test: review items

* imp: review items

* chore: rm markdown link checker

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Co-authored-by: srdtrk <59252793+srdtrk@users.noreply.github.com>

Update CHANGELOG.md

Update CHANGELOG.md

deps: bump cosmos-sdk to v0.50.9 (backport #6828) (#7065)

* deps: bump cosmos-sdk to v0.50.9 (#6828)

* deps: bump cosmos-sdk to v0.50.8

* chore: update changelog

* deps: bump cosmossdk.io/client to v2.0.0-beta.3. bump x/upgrade to v0.1.4

* chore: make tidy-all

* test: bump to 3f6796fba413cca for testing purposes.

* deps: bump cosmos sdk to 0.50.9

* Update CHANGELOG.md

* chore: update CHANGELOG for submodules.

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Co-authored-by: DimitrisJim <d.f.hilliard@gmail.com>
(cherry picked from commit 3425726)

# Conflicts:
#	e2e/go.mod
#	e2e/go.sum
#	modules/light-clients/08-wasm/CHANGELOG.md

* remove e2e folder

* chore: fix 08-wasm CHANGELOG conflict.

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Co-authored-by: Damian Nolan <damiannolan@gmail.com>
Co-authored-by: DimitrisJim <d.f.hilliard@gmail.com>

update changelog.

update changelog.

retract v8.2.x and v8.3.x (#6965)

Co-authored-by: DimitrisJim <d.f.hilliard@gmail.com>