chore(deps): update plugin org.springframework.boot to v3.2.12 (#120)

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

Author: renovate[bot]

buildSrc/gradle.properties

@@ -1,3 +1,3 @@
 version=0.0.1-SNAPSHOT
-springBootVersion=3.2.4
+springBootVersion=3.2.12
 spockVersion=2.4-M1-groovy-4.0

gradle.properties

@@ -5,7 +5,7 @@ org.gradle.jvmargs=-Duser.language=ja -Duser.country=JP \
   --add-exports jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED \
   --add-exports jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED \
   --add-exports jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED
-springBootVersion=3.2.4
+springBootVersion=3.2.12
 domaVersion=3.1.0
 groovyVersion=4.0.10
 spockVersion=2.4-M4-groovy-4.0