fetchmail: Update to version 6.4.38

fetchmail: Update to version 6.4.38

- Update from version 6.4.36 to 6.4.38
- Update of rootfile not required
- Changelog
    6.4.38
	# BREAKING CHANGES:
		* Tighten OpenSSL and wolfSSL version requirements again. See README.SSL.
		  Distributors providing older versions that they backport security fixes for
		  may want to patch socket.c but remember to redirect support to your
		  distribution's support channels.
		  The fetchmail maintainer only supports functionally unmodified builds with
		  publicly available SSL/TLS library versions.
		  fetchmail will refuse to build against OpenSSL 1.0.2 older than 1.0.2u,
		  or wolfSSL older than 5.6.2. It will warn about OpenSSL older than 3.0.9,
		  or between 3.1.0 and 3.1.4, or wolfSSL older than 5.6.6.
	# TRANSLATIONS: language translations were updated by these fine people:
		(in reverse alphabetical order of language codes):
		* ru:    Kirill Isakov [Russian]
		* eo:    Keith Bowes [Esperanto]

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>