Upgrade netty version to 4.1.25.Final.

[ujjboy]

No description provided.

[codecov-io]

Codecov Report

Merging #147 into master will decrease coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #147      +/-   ##
============================================
- Coverage     68.47%   68.45%   -0.03%     
+ Complexity      943      942       -1     
============================================
  Files           340      340              
  Lines         14163    14163              
  Branches       2271     2271              
============================================
- Hits           9698     9695       -3     
- Misses         3305     3306       +1     
- Partials       1160     1162       +2

Impacted Files	Coverage Δ	Complexity Δ
.../main/java/com/alipay/sofa/rpc/tracer/Tracers.java	39.74% <0%> (-2.57%)	0% <0%> (ø)
...pay/sofa/rpc/transport/ClientTransportFactory.java	72.3% <0%> (-1.54%)	0% <0%> (ø)
...com/alipay/sofa/rpc/context/RpcRuntimeContext.java	89.02% <0%> (-1.22%)	0% <0%> (ø)
...va/com/alipay/sofa/rpc/server/bolt/BoltServer.java	73.86% <0%> (-1.14%)	23% <0%> (-1%)
...ay/sofa/rpc/client/AllConnectConnectionHolder.java	53.91% <0%> (+0.55%)	0% <0%> (ø)	⬇️

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