fix: remove fee abstraction module from open api code generation (backport #4319) (#4331)

Author: mergify[bot]

Diff for: changelog.md

@@ -5,6 +5,10 @@
 ### Changes
 
 - [#4292](https://github.com/ignite/cli/pull/4292) Bump Cosmos SDK to `v0.50.9`
+
+### Fixes
+
+- [#4319](https://github.com/ignite/cli/pull/4319) Remove fee abstraction module from open api code generation
 - [#4309](https://github.com/ignite/cli/pull/4309) Fix chain id for chain simulations
 
 ### Fixes

Diff for: ignite/pkg/cosmosgen/generate_openapi.go

@@ -78,6 +78,7 @@ func (g *generator) generateOpenAPISpec(ctx context.Context) error {
 			dir,
 			g.openAPITemplate(),
 			cosmosbuf.ExcludeFiles(
+				"*/osmosis-labs/fee-abstraction/*",
 				"*/module.proto",
 				"*/testutil/*",
 				"*/testdata/*",