slf4j 2.0

See #113, release log:

• a271c0d by @yegor256: #113 apt typo
• fc86070 by @yegor256: #113 tests fix
• 3edd659 by @yegor256: #113 year up
• 3501cbd by @yegor256: #113 skin
• 555e1e5 by @yegor256: #113 rultor
• 908a045 by @yegor256: #113 fixed
• 95eacb8 by @yegor256: #113 lombok off

Released by Rultor 1.70.6, see build log