[Dubbo-4765] fix demo dependencies

[mzorro]

fix issue #4765

[codecov-io]

Codecov Report

Merging #4832 into master will increase coverage by 0.54%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #4832      +/-   ##
============================================
+ Coverage     63.31%   63.86%   +0.54%     
+ Complexity      451      449       -2     
============================================
  Files           790      769      -21     
  Lines         35021    33177    -1844     
  Branches       5472     5229     -243     
============================================
- Hits          22175    21189     -986     
+ Misses        10316     9558     -758     
+ Partials       2530     2430     -100

Impacted Files	Coverage Δ	Complexity Δ
...ache/dubbo/remoting/transport/AbstractChannel.java	75% <0%> (-12.5%)	0% <0%> (ø)
.../apache/dubbo/qos/protocol/QosProtocolWrapper.java	70.73% <0%> (-12.2%)	0% <0%> (ø)
.../apache/dubbo/remoting/transport/AbstractPeer.java	58.69% <0%> (-8.7%)	0% <0%> (ø)
...apache/dubbo/rpc/protocol/dubbo/FutureAdapter.java	53.84% <0%> (-7.7%)	0% <0%> (ø)
...bbo/registry/support/ProviderConsumerRegTable.java	80.48% <0%> (-4.88%)	0% <0%> (ø)
...onfig/spring/extension/SpringExtensionFactory.java	80.48% <0%> (-4.88%)	0% <0%> (ø)
.../dubbo/remoting/transport/netty4/NettyChannel.java	61.17% <0%> (-4.71%)	0% <0%> (ø)
...he/dubbo/remoting/transport/netty/NettyServer.java	69.64% <0%> (-3.58%)	8% <0%> (-1%)
...e/dubbo/remoting/transport/netty/NettyChannel.java	54.11% <0%> (-3.53%)	19% <0%> (-1%)
...ache/dubbo/rpc/protocol/ProtocolFilterWrapper.java	85% <0%> (-3.34%)	0% <0%> (ø)
... and 31 more

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[ralf0131]

LGTM. Thanks for the pull request.