[releng] Fix 42 calendar file extension

[Michael Catanzaro <mcatanzaro src gnome org>]

commit a7862a6bb5d49681a6ae0a52e7f8ae4fc3f55d93
Author: Michael Catanzaro <mcatanzaro redhat com>
Date:   Wed Dec 8 15:12:34 2021 -0600

    Fix 42 calendar file extension

 tools/schedule/{42.ical => 42.ics} | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
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diff --git a/tools/schedule/42.ical b/tools/schedule/42.ics
similarity index 100%
rename from tools/schedule/42.ical
rename to tools/schedule/42.ics