Bump Spring Boot version

Author: backpaper0

pom.xml

@@ -47,7 +47,7 @@
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
         <doma.version>2.44.3</doma.version>
-        <spring-boot.version>1.5.22.RELEASE</spring-boot.version>
+        <spring-boot.version>2.2.11.RELEASE</spring-boot.version>
         <source-plugin.version>3.2.1</source-plugin.version>
         <javadoc-plugin.version>3.2.0</javadoc-plugin.version>
         <nexus-staging-plugin.version>1.6.8</nexus-staging-plugin.version>