chore: BOMS-39 rename arbi-bom to orbi-bom

Author: vgulati-apphelix

.github/dependabot.yml

@@ -6,4 +6,4 @@ updates:
     schedule:
         interval: "weekly"
     reviewers:
-      - "openedx/arbi-bom"
+      - "openedx/orbi-bom"

.github/workflows/upgrade-python-requirements.yml

@@ -13,8 +13,8 @@ jobs:
    call-upgrade-python-requirements-workflow:
     with:
        branch: ${{ github.event.inputs.branch }}
-       team_reviewers: "arbi-bom"
-       email_address: arbi[email protected] 
+       team_reviewers: "orbi-bom"
+       email_address: orbi[email protected] 
        send_success_notification: false
     secrets:
        requirements_bot_github_token: ${{ secrets.REQUIREMENTS_BOT_GITHUB_TOKEN }}