chore(deps): update plugin org.springframework.boot to v3.4.9 (#67)

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

Author: renovate[bot]

gradle.properties

@@ -6,6 +6,6 @@ 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=3.4.8
+springBootVersion=3.4.9
 springCloudVersion=2024.0.2
 spotlessVersion=7.0.4