Update version to 3.2.4

[wubin12]

What does this PR do?
Update version to 3.2.4

Why are these changes required?

This PR has been tested by:

• Unit Tests
• Manual Testing

Follow up

Extra details

[codecov-io]

Codecov Report

Merging #1932 into master will decrease coverage by 0.03%.
The diff coverage is 71.42%.

@@             Coverage Diff              @@
##             master    #1932      +/-   ##
============================================
- Coverage     45.85%   45.81%   -0.04%     
+ Complexity     3808     3799       -9     
============================================
  Files           461      461              
  Lines         26735    26738       +3     
  Branches       2714     2714              
============================================
- Hits          12258    12250       -8     
- Misses        13415    13424       +9     
- Partials       1062     1064       +2

Impacted Files	Coverage Δ	Complexity Δ
src/main/java/org/tron/program/Version.java	50% <ø> (ø)	1 <0> (ø)	⬇️
src/main/java/org/tron/core/net/node/NodeImpl.java	48.06% <71.42%> (-0.66%)	83 <2> (-2)
...g/tron/core/net/message/ChainInventoryMessage.java	66.66% <0%> (-2.78%)	7% <0%> (-1%)
...a/org/tron/common/overlay/server/MessageQueue.java	82.6% <0%> (-2.18%)	32% <0%> (-1%)
.../java/org/tron/core/net/node/NodeDelegateImpl.java	33.33% <0%> (-2%)	18% <0%> (-3%)
src/main/java/org/tron/core/db/KhaosDatabase.java	63.05% <0%> (-0.64%)	24% <0%> (-1%)
src/main/java/org/tron/core/db/Manager.java	49.07% <0%> (-0.13%)	111% <0%> (-1%)
.../org/tron/core/net/message/TransactionMessage.java	73.33% <0%> (+26.66%)	3% <0%> (ø)	⬇️

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