chore: bump agentic version: 1.56.0 (#2600)

Co-authored-by: aws-toolkit-automation <>

Author: ashishrp-aws

app/aws-lsp-codewhisperer-runtimes/src/version.json

@@ -1,3 +1,3 @@
 {
-    "agenticChat": "1.55.0"
+    "agenticChat": "1.56.0"
 }