Explicitly specify spring-boot-maven-plugin version same as spring-boot

[liqipeng]

Explicitly specify spring-boot-maven-plugin version same as spring-boot by pluginManagement.

[codecov-commenter]

Codecov Report

Merging #8596 (b9c88b9) into develop (e5cfd23) will increase coverage by 0.04%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             develop    #8596      +/-   ##
=============================================
+ Coverage      41.20%   41.25%   +0.04%     
- Complexity      4428     4430       +2     
=============================================
  Files            882      882              
  Lines          32107    32107              
  Branches        3718     3718              
=============================================
+ Hits           13231    13245      +14     
+ Misses         17549    17531      -18     
- Partials        1327     1331       +4     

Impacted Files	Coverage Δ
...alibaba/nacos/core/remote/control/TpsRecorder.java	74.32% <0.00%> (-1.36%)	⬇️
...s/naming/consistency/persistent/raft/RaftCore.java	9.92% <0.00%> (+0.19%)	⬆️
...ient/naming/remote/http/NamingHttpClientProxy.java	80.36% <0.00%> (+0.91%)	⬆️
.../nacos/naming/healthcheck/ClientBeatCheckTask.java	31.81% <0.00%> (+1.51%)	⬆️
...a/nacos/core/remote/control/TpsMonitorManager.java	54.54% <0.00%> (+3.24%)	⬆️
.../alibaba/nacos/client/naming/beat/BeatReactor.java	52.87% <0.00%> (+6.89%)	⬆️

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[KomachiSion]

What‘s the reason add spring-boot-maven-plugin?

[liqipeng]

What‘s the reason add spring-boot-maven-plugin?

@KomachiSion
spring-boot-maven-plugin is used in console, address, config module, and no version specified.
This PR is not to add spring-boot-maven-plugin plugin to parent pom, but add spring-boot-maven-plugin to pluginManagement to make the version specified.

I meet a similar error describe in https://www.jianshu.com/p/878a8b62e70f when I build nacos in a differenct PC.
So I think it is better to specify a version to keep version fixed with spring-boot version.