apps/progs.pl: use SOURCE_DATE_EPOCH if defined for copyright year
As with
11d7d903, use SOURCE_DATE_EPOCH for the copyright year if it is
defined, to avoid reproducibility problems.
CLA: trivial
Signed-off-by: Ross Burton <ross.burton@arm.com>
Change-Id: I1bea19070411a69155c43de7082350fb2c499da3
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17601)
(cherry picked from commit
27aca04e13ca8a9bead49de7bc380110ecb7064e)