update upgrade message

Author: jonhealy1

stac_validator/stac_validator.py

@@ -18,9 +18,9 @@ def print_update_message(version: str) -> None:
         None
     """
     click.secho()
-    if version != "1.0.0":
+    if version != "1.1.0":
         click.secho(
-            f"Please upgrade from version {version} to version 1.0.0!", fg="red"
+            f"Please upgrade from version {version} to version 1.1.0!", fg="red"
         )
     else:
         click.secho("Thanks for using STAC version 1.0.0!", fg="green")