Update org.seasar.doma:doma to v3.12.0 (#307)

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

Author: renovate[bot]

gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 # Core dependencies
-doma = "3.11.3"
+doma = "3.12.0"
 freemarker = "2.3.34"
 h2 = "2.4.240"
 postgresql = "42.7.10"