update API compat check baseline to b51db3e (#2588)

Signed-off-by: Pablo Garay <[email protected]>

Author: pablo-garay

.github/workflows/check_api_backwards_compatibility_workflow.yml

@@ -91,7 +91,7 @@ jobs:
       # Default baseline for automatic PR checks
       # Can be: branch name (e.g., 'main'), commit hash, or tag
       # Will be resolved to commit hash during execution
-      DEFAULT_BASELINE: 'f5344166732f45bb0dd825dc875288ea97b15b47'
+      DEFAULT_BASELINE: 'b51db3e07a97fed6af5464fae8fa43be1d0564b9'
       # Tag pattern for auto-detection (e.g., 'core_r*', 'core_v*')
       TAG_PATTERN: 'core_v*'
       # Tag regex filter (e.g., '^core_v[0-9]+\.[0-9]+\.[0-9]+$' for stable versions only)