fix(currency): returndays behind in int instead of timedelta

Signed-off-by: Varsha GS <varsha.gs@ibm.com>

Author: GSVarsha

.tekton/.currency/scripts/generate_report.py

@@ -23,7 +23,7 @@
 
 
 def estimate_days_behind(release_date):
-    return datetime.today() - datetime.strptime(release_date, "%Y-%m-%d")
+    return (datetime.today().date() - datetime.strptime(release_date, "%Y-%m-%d").date()).days
 
 
 def get_upstream_version(dependency, last_supported_version):