Added akataria to cosmos sdk codeowners (Azure#19336)

Co-authored-by: Aayush Kataria <akataria@microsoft.com>

Author: aayush3011

.github/CODEOWNERS

@@ -35,7 +35,7 @@
 /sdk/core/azure-core-tracing-opentelemetry/         @samvaity @alzimmermsft
 
 # PRLabel: %Cosmos
-/sdk/cosmos/                                        @moderakh @kushagraThapar @FabianMeiswinkel @kirankumarkolli @mbhaskar @simplynaveen20 @xinlian12 @milismsft
+/sdk/cosmos/                                        @moderakh @kushagraThapar @FabianMeiswinkel @kirankumarkolli @mbhaskar @simplynaveen20 @xinlian12 @milismsft @aayush3011
 # PRLabel: %azure-spring
 /sdk/cosmos/azure-spring-data-cosmos/               @kushagraThapar @saragluna @yiliuTo @chenrujun @backwind1233 @jialindai @mbhaskar
 # PRLabel: %azure-spring