Update Junit test dependencies

[cheenamalhotra]

Version updates + removing unwanted maven dependency junit:junit

[codecov-io]

Codecov Report

Merging #777 into dev will increase coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##                dev     #777      +/-   ##
============================================
+ Coverage     48.17%   48.19%   +0.02%     
- Complexity     2776     2780       +4     
============================================
  Files           116      116              
  Lines         27854    27854              
  Branches       4636     4636              
============================================
+ Hits          13418    13425       +7     
+ Misses        12215    12210       -5     
+ Partials       2221     2219       -2

Flag	Coverage Δ	Complexity Δ
#JDBC42	47.77% <ø> (+0.06%)	2739 <ø> (+4)	⬆️
#JDBC43	48% <ø> (-0.01%)	2770 <ø> (+1)

Impacted Files	Coverage Δ	Complexity Δ
...om/microsoft/sqlserver/jdbc/SimpleInputStream.java	51.47% <0%> (-1.48%)	11% <0%> (-1%)
...in/java/com/microsoft/sqlserver/jdbc/IOBuffer.java	53.8% <0%> (ø)	0% <0%> (ø)	⬇️
...n/java/com/microsoft/sqlserver/jdbc/DataTypes.java	79.48% <0%> (+0.19%)	5% <0%> (+1%)	⬆️
...m/microsoft/sqlserver/jdbc/SQLServerResultSet.java	32.49% <0%> (+0.26%)	251% <0%> (+3%)	⬆️
...om/microsoft/sqlserver/jdbc/ReaderInputStream.java	46.15% <0%> (+1.09%)	17% <0%> (+1%)	⬆️

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