Bug 38344: Fix typo - space before exclamation mark in "Thank you !"

In English, there should not be a space before an exclamation mark
in a sentence. For example, "Thank you !" is not correct.

Test plan:
1. Search the codebase for "Thank you !": grep -rn "Thank you !" *
2. Result - one occurance:
   C4/SIP/ILS.pm:317:    return (1, 'Thank you !', '');
3. Apply the patch.
4. Repeat step 1.
5. There should now be no occurances.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Phil Ringnalda <phil@chetcolibrary.org>
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
(cherry picked from commit 1c6dfb5f35)
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>

C4/SIP/ILS.pm

@@ -311,7 +311,7 @@ sub end_patron_session {
     my ($self, $patron_id) = @_;
 
     # success?, screen_msg, print_line
-    return (1, 'Thank you !', '');
+    return (1, 'Thank you!', '');
 }
 
 sub pay_fee {