chore: use go-1.21

[robert-zaremba]

Description

[codecov]

Codecov Report

Merging #2261 (ef6d2d5) into main (7f05ad4) will decrease coverage by 4.97%.
Report is 240 commits behind head on main.
The diff coverage is 84.18%.

❗ Current head ef6d2d5 differs from pull request most recent head 2ec7ea7. Consider uploading reports for the commit 2ec7ea7 to get more accurate results

@@            Coverage Diff             @@
##             main    #2261      +/-   ##
==========================================
- Coverage   75.38%   70.42%   -4.97%     
==========================================
  Files         100      168      +68     
  Lines        8025    12643    +4618     
==========================================
+ Hits         6050     8904    +2854     
- Misses       1589     3140    +1551     
- Partials      386      599     +213     

Files Changed	Coverage Δ
ante/spam_prevention.go	75.92% <ø> (ø)
cmd/ibc_denom/main.go	0.00% <0.00%> (ø)
util/coin/coin.go	12.50% <0.00%> (ø)
util/sdkutil/msg.go	0.00% <0.00%> (ø)
x/incentive/codec.go	47.82% <ø> (+9.89%)	⬆️
x/incentive/keeper/bond.go	92.50% <ø> (ø)
x/incentive/keeper/genesis.go	40.90% <ø> (ø)
x/incentive/keeper/grpc_query.go	59.18% <ø> (ø)
x/incentive/keeper/hooks.go	50.00% <ø> (ø)
x/incentive/keeper/invariants.go	0.00% <ø> (ø)
... and 51 more

... and 85 files with indirect coverage changes

[gsk967]

LGTM

[gsk967]

I have small suggestion can we do after the release of umee with cosmos-sdk 47