let's upgrade to jcabi 1.27.0

See #1544, release log:

• 039189c by @yegor256: #1544 polish
• a4e8a7f by @yegor256: #1544 skip for codecov
• ca19c9b by @yegor256: #1544 badge off
• 9520dd7 by @yegor256: #1544 no skip
• 2e7a30d by @yegor256: #1544 build is clean
• 5f213df by @yegor256: #1544 it tests fixed
• 801020b by @yegor256: #1544 versions back
• 5ad4660 by @yegor256: #1544 java 11
• f1f44d0 by @yegor256: #1544 parent up
• 379ed65 by @yegor256: #1544 jpeek off
• cce265b by @yegor256: #1544 logo
• 7a86240 by @yegor256: #1544 badges
• 36b7b8e by @yegor256: #1544 actions and year up
• efc9b33 by @yegor256: #1556 image
• c668b41 by @rultor: Merge branch '__rultor'
• dffdf6b by @rultor: Merge branch '__rultor'
• 23863cb by @rultor: Merge branch '__rultor'
• cf1f457 by @dependabot[bot]: Bump httpclient from 4.5.3 to ...
• d55ce00 by @andreoss: Remove duplicated dependency
• d199b2f by @andreoss: Prevent duplicated classes
• and 7 more...

Released by Rultor 1.70.6, see build log