Enable Appveyor CI with Java 11

[cheenamalhotra]

No description provided.

[codecov-io]

Codecov Report

Merging #886 into dev will decrease coverage by 0.05%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##                dev     #886      +/-   ##
============================================
- Coverage     48.71%   48.65%   -0.06%     
+ Complexity     2797     2794       -3     
============================================
  Files           116      116              
  Lines         27877    27877              
  Branches       4650     4650              
============================================
- Hits          13579    13563      -16     
- Misses        12093    12109      +16     
  Partials       2205     2205

Flag	Coverage Δ	Complexity Δ
#JDBC42	48.08% <ø> (-0.14%)	2745 <ø> (-11)
#JDBC43	48.63% <ø> (+0.03%)	2793 <ø> (+5)	⬆️

Impacted Files	Coverage Δ	Complexity Δ
...om/microsoft/sqlserver/jdbc/ReaderInputStream.java	43.95% <0%> (-3.3%)	15% <0%> (ø)
...rc/main/java/com/microsoft/sqlserver/jdbc/DDC.java	44.2% <0%> (-1.54%)	106% <0%> (-2%)
...om/microsoft/sqlserver/jdbc/SimpleInputStream.java	52.94% <0%> (-1.48%)	11% <0%> (-1%)
...rc/main/java/com/microsoft/sqlserver/jdbc/dtv.java	62.33% <0%> (-0.18%)	0% <0%> (ø)
...m/microsoft/sqlserver/jdbc/SQLServerResultSet.java	32.69% <0%> (-0.08%)	255% <0%> (-1%)
...in/java/com/microsoft/sqlserver/jdbc/IOBuffer.java	56.24% <0%> (-0.04%)	0% <0%> (ø)
...c/main/java/com/microsoft/sqlserver/jdbc/Util.java	61.42% <0%> (+0.43%)	90% <0%> (+1%)	⬆️

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