feat(source-bing-ads): increase default concurrency to 40 for rate limit testing (#74745)

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

Author: sophiecuiy

airbyte-integrations/connectors/source-bing-ads/manifest.yaml

@@ -17473,8 +17473,8 @@ schemas:
 
 concurrency_level:
   type: ConcurrencyLevel
-  default_concurrency: 2
-  max_concurrency: 10
+  default_concurrency: 40
+  max_concurrency: 40
 
 spec:
   type: Spec

airbyte-integrations/connectors/source-bing-ads/metadata.yaml

@@ -16,7 +16,7 @@ data:
   connectorSubtype: api
   connectorType: source
   definitionId: 47f25999-dd5e-4636-8c39-e7cea2453331
-  dockerImageTag: 2.23.14
+  dockerImageTag: 2.23.15-rc.1
   dockerRepository: airbyte/source-bing-ads
   documentationUrl: https://docs.airbyte.com/integrations/sources/bing-ads
   externalDocumentationUrls:
@@ -44,7 +44,7 @@ data:
   releaseStage: generally_available
   releases:
     rolloutConfiguration:
-      enableProgressiveRollout: false
+      enableProgressiveRollout: true
     breakingChanges:
       1.0.0:
         message: Version 1.0.0 removes the primary keys from the geographic performance report streams. This will prevent the connector from losing data in the incremental append+dedup sync mode because of deduplication and incorrect primary keys. A data reset and schema refresh of all the affected streams is required for the changes to take effect.

docs/integrations/sources/bing-ads.md

@@ -319,6 +319,7 @@ The Bing Ads API limits the number of requests for all Microsoft Advertising cli
 
 | Version     | Date       | Pull Request                                                                                                                     | Subject                                                                                                                                                                |
 |:------------|:-----------|:---------------------------------------------------------------------------------------------------------------------------------|:-----------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| 2.23.15-rc.1 | 2026-03-11 | [*PR_NUMBER_PLACEHOLDER*](https://github.com/airbytehq/airbyte/pull/*PR_NUMBER_PLACEHOLDER*) | Increase default concurrency from 2 to 40 to test rate limit behavior |
 | 2.23.14 | 2026-03-10 | [74483](https://github.com/airbytehq/airbyte/pull/74483) | Update dependencies |
 | 2.23.13 | 2026-03-03 | [73654](https://github.com/airbytehq/airbyte/pull/73654) | Use streaming decompression in BingAdsGzipCsvDecoder to prevent OOM on large accounts |
 | 2.23.12 | 2026-03-03 | [73829](https://github.com/airbytehq/airbyte/pull/73829) | Update dependencies |