bug: don't replace ics23 with v0.8.0 with sdk v0.46.7+

[faddat]

The sdk v0.46.7 release notes recommend that users bump ics23 to v0.9.0 and discontinue the usage of the replace statement in go.mod that has been used since the dragonberry patch.

• use ics23 v0.9.0 #1580
• bug: don't replace ics23 with v0.8.0 when using sdk v0.46.7 evmos#1200
• https://github.com/cosmos/cosmos-sdk/releases/tag/v0.46.7

Please note that #1580 is targeting the release/v0.20.0 branch specifically.

This is also patched in #1575, which targets main.