Update dependency io.github.dkim19375.dkim-gradle to v1.4.3 (#149)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 dkimcore = "1.5.2"
-dkim-gradle = "1.4.2"
+dkim-gradle = "1.4.3"
 dokkatoo = "2.4.0"
 junit = "5.12.2"
 kotlin = "2.1.21"