[bearertokenauthextension]: add frzifus as codeowner (open-telemetry#23384)

cc @jpkrohling @pavankrish123

Signed-off-by: Benedikt Bongartz <[email protected]>

Author: frzifus

.github/CODEOWNERS

@@ -85,7 +85,7 @@ exporter/zipkinexporter/                                 @open-telemetry/collect
 extension/asapauthextension/                             @open-telemetry/collector-contrib-approvers @jamesmoessis @MovieStoreGuy
 extension/awsproxy/                                      @open-telemetry/collector-contrib-approvers @Aneurysm9 @mxiamxia
 extension/basicauthextension/                            @open-telemetry/collector-contrib-approvers @jpkrohling @svrakitin
-extension/bearertokenauthextension/                      @open-telemetry/collector-contrib-approvers @jpkrohling @pavankrish123
+extension/bearertokenauthextension/                      @open-telemetry/collector-contrib-approvers @jpkrohling @pavankrish123 @frzifus
 extension/headerssetterextension/                        @open-telemetry/collector-contrib-approvers @jpkrohling @kovrus
 extension/healthcheckextension/                          @open-telemetry/collector-contrib-approvers @jpkrohling
 extension/httpforwarder/                                 @open-telemetry/collector-contrib-approvers @atoulme @rmfitzpatrick