Add landomen to github_asana_mapping.yml (#6389)

Task/Issue URL: private onboarding task

### Description
Adds my username to github/asana mapping as per onboarding task.

### Steps to test this PR
No need to test

### UI changes
No UI changes

Author: landomen

.github/actions/assign-release-task/github_asana_mapping.yml

@@ -12,3 +12,4 @@ CrisBarreiro: "1204920898013507"
 0nko: "1207418217763343"
 mikescamell: "1207908161520961"
 LukasPaczos: "1208671518759204"
+landomen: "1210594645132364"