fix: Correct CDK version for source-aircall in exclusion list

- Update source-aircall from CDK 4.6.2 to 4.5.4 to match registry
- Fixes CI failure where connector wasn't being excluded properly
- Resolves validation error for source-aircall in Fast pytest suite

Co-Authored-By: AJ Steers <[email protected]>

Author: devin-ai-integration[bot]

unit_tests/sources/declarative/test_manifest_registry_validation.py

@@ -238,7 +238,7 @@
     ("source-zoom", "6.44.0"),
     ("source-zuora", "6.44.0"),
     ("source-ahrefs", "4.6.2"),
-    ("source-aircall", "4.6.2"),
+    ("source-aircall", "4.5.4"),
     ("source-alpha-vantage", "4.6.2"),
     ("source-appcues", "4.6.2"),
     ("source-appstore-singer", "4.6.2"),