Update codeowner of /schema folder (#17020)

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Author: eashaw

CODEOWNERS

@@ -65,7 +65,7 @@ go.mod @fleetdm/go
 /docs                                           @rachaelshaw
 /docs/Using-Fleet/REST-API.md                   @rachaelshaw # « REST API reference documentation
 /docs/Contributing/API-for-contributors.md      @rachaelshaw # « Advanced / contributors-only API reference documentation
-/schema                                         @rachaelshaw # « Data tables (osquery/fleetd schema) documentation
+/schema                                         @eashaw # « Data tables (osquery/fleetd schema) documentation
 
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 # 🫧 Pricing and features