Bump Spring Boot to 4.0.0-RC2 (#347)

Author: making

.github/workflows/ci.yml

@@ -51,7 +51,7 @@ jobs:
         # OSS support versions
         # https://spring.io/projects/spring-boot#support
         # and milestone version of the next release
-        spring-boot-version: [ 4.0.0-RC1, 4.0.0-SNAPSHOT ]
+        spring-boot-version: [ 4.0.0-RC2, 4.0.0-SNAPSHOT ]
 
     steps:
       - uses: actions/checkout@v5

pom.xml

@@ -48,7 +48,7 @@
         <maven.compiler.source>17</maven.compiler.source>
         <maven.compiler.target>17</maven.compiler.target>
         <doma.version>3.11.1</doma.version>
-        <spring-boot.version>4.0.0-RC1</spring-boot.version>
+        <spring-boot.version>4.0.0-RC2</spring-boot.version>
         <source-plugin.version>3.3.1</source-plugin.version>
         <javadoc-plugin.version>3.12.0</javadoc-plugin.version>
         <nexus-staging-plugin.version>1.7.0</nexus-staging-plugin.version>