sysutils/bareos-server: Update to 23.1.0

• Fix build on recent releases [1]
• Fix rc script REQUIRE substitutions
• Remove unused %%REQ_MYSQL%% in rc script
• Do not install new sample dedup.conf file because it is invalid and causes the director to fail to start as is.

PR: 283052, 278948 [1]
Approved by: acm (maintainer)