fix: enable gimp tests

gimp tests have been disabled in January 2021 by commit
a5d6c25 but they seem to work perfectly
fine nowadays (at least on Linux)

Signed-off-by: Fabrice Fontaine <fabrice.fontaine@orange.com>

test/test_scanner.py

@@ -49,7 +49,7 @@
         for i in prod_list:
             all_the_tests.append(i)
 
-DISABLED_TESTS_ACTIONS: list[str] = ["gimp", "ceph"]
+DISABLED_TESTS_ACTIONS: list[str] = ["ceph"]
 DISABLED_TESTS_LOCAL: list[str] = []
 DISABLED_TESTS_WINDOWS: list[str] = ["libsrtp", "p7zip"]