fix: openai image sanitization

[ablaszkiewicz]

I forgot to do the version bump and changelog in the previous PR #384

[github-actions]

posthog-python Compliance Report

Date: 2026-02-06 12:58:50 UTC
Duration: 142083ms

⚠️ Some Tests Failed

27/29 tests passed, 2 failed

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Capture Tests

⚠️ 27/29 tests passed, 2 failed

View Details

Test	Status	Duration
Format Validation.Event Has Required Fields	✅	516ms
Format Validation.Event Has Uuid	✅	1506ms
Format Validation.Event Has Lib Properties	✅	1507ms
Format Validation.Distinct Id Is String	✅	1507ms
Format Validation.Token Is Present	✅	1506ms
Format Validation.Custom Properties Preserved	✅	1507ms
Format Validation.Event Has Timestamp	✅	1507ms
Retry Behavior.Retries On 503	✅	7340ms
Retry Behavior.Does Not Retry On 400	✅	3510ms
Retry Behavior.Does Not Retry On 401	✅	3507ms
Retry Behavior.Respects Retry After Header	❌	7473ms
Retry Behavior.Implements Backoff	✅	18912ms
Retry Behavior.Retries On 500	✅	6975ms
Retry Behavior.Retries On 502	✅	6921ms
Retry Behavior.Retries On 504	✅	6945ms
Retry Behavior.Max Retries Respected	✅	19492ms
Deduplication.Generates Unique Uuids	✅	1506ms
Deduplication.Preserves Uuid On Retry	✅	7258ms
Deduplication.Preserves Uuid And Timestamp On Retry	✅	13860ms
Deduplication.Preserves Uuid And Timestamp On Batch Retry	✅	6688ms
Deduplication.No Duplicate Events In Batch	✅	1504ms
Deduplication.Different Events Have Different Uuids	✅	1507ms
Compression.Sends Gzip When Enabled	✅	1507ms
Batch Format.Uses Proper Batch Structure	✅	1507ms
Batch Format.Flush With No Events Sends Nothing	✅	1005ms
Batch Format.Multiple Events Batched Together	✅	1505ms
Error Handling.Does Not Retry On 403	✅	3509ms
Error Handling.Does Not Retry On 413	✅	3508ms
Error Handling.Retries On 408	❌	6510ms

Failures

retry_behavior.respects_retry_after_header

Retry delay too short: 966ms < 2500ms

error_handling.retries_on_408

Expected at least 2 requests, got 1