Bump spring-boot-maven-plugin from 2.7.7 to 2.7.8

Bumps [spring-boot-maven-plugin](https://github.com/spring-projects/spring-boot) from 2.7.7 to 2.7.8.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.7.7...v2.7.8)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

dubbo-demo/dubbo-demo-annotation/pom.xml

@@ -30,7 +30,7 @@
 
     <properties>
         <skip_maven_deploy>true</skip_maven_deploy>
-        <spring-boot-maven-plugin.version>2.7.7</spring-boot-maven-plugin.version>
+        <spring-boot-maven-plugin.version>2.7.8</spring-boot-maven-plugin.version>
     </properties>
 
     <modules>

dubbo-demo/dubbo-demo-api/pom.xml

@@ -36,7 +36,7 @@
 
     <properties>
         <skip_maven_deploy>true</skip_maven_deploy>
-        <spring-boot-maven-plugin.version>2.7.7</spring-boot-maven-plugin.version>
+        <spring-boot-maven-plugin.version>2.7.8</spring-boot-maven-plugin.version>
     </properties>
 
     <artifactId>dubbo-demo-api</artifactId>

dubbo-demo/dubbo-demo-spring-boot/pom.xml

@@ -36,7 +36,7 @@
         <maven.compiler.source>8</maven.compiler.source>
         <maven.compiler.target>8</maven.compiler.target>
         <skip_maven_deploy>true</skip_maven_deploy>
-        <spring-boot-maven-plugin.version>2.7.7</spring-boot-maven-plugin.version>
+        <spring-boot-maven-plugin.version>2.7.8</spring-boot-maven-plugin.version>
     </properties>
 
 </project>

dubbo-demo/dubbo-demo-xml/pom.xml

@@ -32,7 +32,7 @@
 
     <properties>
         <skip_maven_deploy>true</skip_maven_deploy>
-        <spring-boot-maven-plugin.version>2.7.7</spring-boot-maven-plugin.version>
+        <spring-boot-maven-plugin.version>2.7.8</spring-boot-maven-plugin.version>
     </properties>
 
     <modules>