Add nacos dependencies to dubbo-demo

[ralf0131]

What is the purpose of the change

Add nacos dependencies to dubbo-demo

Brief changelog

Add nacos dependencies to dubbo-demo

Verifying this change

Maven test passed

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[codecov-io]

Codecov Report

Merging #4447 into 2.7.3-release will decrease coverage by 0.04%.
The diff coverage is n/a.

@@                 Coverage Diff                 @@
##             2.7.3-release    #4447      +/-   ##
===================================================
- Coverage             63.5%   63.46%   -0.05%     
+ Complexity             452      451       -1     
===================================================
  Files                  765      765              
  Lines                32690    32696       +6     
  Branches              5149     5151       +2     
===================================================
- Hits                 20761    20751      -10     
- Misses                9542     9556      +14     
- Partials              2387     2389       +2

Impacted Files	Coverage Δ	Complexity Δ
...onfig/spring/extension/SpringExtensionFactory.java	78.04% <0%> (-7.32%)	0% <0%> (ø)
...ng/exchange/support/header/HeartbeatTimerTask.java	73.68% <0%> (-5.27%)	0% <0%> (ø)
...e/dubbo/remoting/transport/netty/NettyChannel.java	57.64% <0%> (-4.71%)	20% <0%> (-1%)
...pache/dubbo/registry/support/AbstractRegistry.java	78.54% <0%> (-3.07%)	0% <0%> (ø)
...he/dubbo/registry/multicast/MulticastRegistry.java	67.87% <0%> (-1.81%)	0% <0%> (ø)
...n/java/org/apache/dubbo/common/utils/NetUtils.java	67.05% <0%> (-1.62%)	0% <0%> (ø)
...dubbo/rpc/protocol/dubbo/CallbackServiceCodec.java	80.14% <0%> (-0.74%)	0% <0%> (ø)
.../apache/dubbo/remoting/transport/AbstractPeer.java	67.39% <0%> (+4.34%)	0% <0%> (ø)	⬇️
.../remoting/transport/netty4/NettyServerHandler.java	71.42% <0%> (+9.52%)	0% <0%> (ø)	⬇️
...ache/dubbo/remoting/p2p/support/AbstractGroup.java	56.81% <0%> (+11.36%)	0% <0%> (ø)	⬇️

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