refactor: use errors.New to replace fmt.Errorf with no parameters

[LesCyber]

Replaced fmt.Errorf with errors.New in cases where formatting is not required. This reduces unnecessary function calls, leading to slightly improved performance and cleaner code.

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 12 lines in your changes missing coverage. Please review.

Project coverage is 46.10%. Comparing base (90b49fc) to head (efd5fe1).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
x/wasm/client/cli/tx.go	0.00%	7 Missing ⚠️
x/wasm/client/cli/gov_tx.go	60.00%	2 Missing ⚠️
x/wasm/client/cli/query.go	0.00%	1 Missing ⚠️
x/wasm/keeper/wasmtesting/mock_keepers.go	0.00%	1 Missing ⚠️
x/wasm/module.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2140      +/-   ##
==========================================
- Coverage   46.12%   46.10%   -0.02%     
==========================================
  Files          78       78              
  Lines       10731    10731              
==========================================
- Hits         4950     4948       -2     
- Misses       5339     5340       +1     
- Partials      442      443       +1     

Files with missing lines	Coverage Δ
x/wasm/types/validation.go	96.36% <100.00%> (ø)
x/wasm/client/cli/query.go	0.00% <0.00%> (ø)
x/wasm/keeper/wasmtesting/mock_keepers.go	0.00% <0.00%> (ø)
x/wasm/module.go	0.00% <0.00%> (ø)
x/wasm/client/cli/gov_tx.go	12.29% <60.00%> (ø)
x/wasm/client/cli/tx.go	15.18% <0.00%> (ø)

... and 1 file with indirect coverage changes