package/exim: bump version to 4.93.0.3

package/exim: bump version to 4.93.0.3

Removed 0004-Fix-uClibc-build.patch, committed upstream
https://git.exim.org/exim.git/commitdiff/ec5bf0b83235d01ad0b2865d1819a603441f50f2

Renumbered remaining patches.

Added hashes provided by upstream.

Explicitly disabled DANE after upstream enabled it:
https://git.exim.org/exim.git/commitdiff/59c0959a36649c4554bd0f18f2c2e74571ed41eb#patch3

Use new TLS options:
https://git.exim.org/exim.git/commitdiff/01603eec64d42431f182b33008206facfc7f800e#patch1

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>