fix(tools): remove leading zero from "01st" in changelog dates

tools/generate-changelog.py

@@ -91,7 +91,7 @@ def current_date(project):
         return today.strftime("%Y-%m-%d")
     else:
         daysuffix = {1: "st", 2: "nd", 3: "rd"}.get(today.day % 10, "th")
-        return today.strftime(f"%d{daysuffix} %B %Y")
+        return today.strftime(f"%-d{daysuffix} %B %Y")
 
 
 @click.command()