develop
Fix #24668: Add Beam Job for syncing Firebase and Oppia (#24934)
Fix #23694: Fix account deletion crash caused by invalid parsing of MailChimpError (#25120)
Remove dependencies from common.py and from scripts on core (#23993)
Fix #26623: Migrate datetime usage to utils functions (#26648)
Fix #25307: Stop email retries for permanent 4xx client errors (#25746)
Fix Elasticsearch multi_match query to include fields (#25849)
Adds beam job to synthesize voiceovers for all curated explorations (#23607)
Black formatter staging (#23456)
Add basic infrastructure for pytest (#23919)
Fix #24714: Add Azure translation adapter and testing emulator 2.1_PR2_PR_3 (#26408)
Rename inner oppia/ directory to core/ to prevent confusion between two directories named oppia/.