Fix CI Tests and Artifact Cache Issues

[fchorney]

Use CLI script to automatically replace the 1.3 test with a 1.5 test (if necessary), as well as use new cache steps to cache the julia build artifacts

[codecov]

Codecov Report

Merging #174 (b4193dc) into master (6485b95) will decrease coverage by 1.29%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #174      +/-   ##
==========================================
- Coverage   97.72%   96.42%   -1.30%     
==========================================
  Files          13       13              
  Lines         395      336      -59     
==========================================
- Hits          386      324      -62     
- Misses          9       12       +3     

Impacted Files	Coverage Δ
src/syslog.jl	66.66% <0.00%> (-33.34%)	⬇️
src/stdlib.jl	77.77% <0.00%> (-13.14%)	⬇️
src/records.jl	89.65% <0.00%> (-4.47%)	⬇️
src/formatters.jl	96.07% <0.00%> (-2.07%)	⬇️
src/memento_test.jl	97.29% <0.00%> (-0.38%)	⬇️
src/loggers.jl	99.09% <0.00%> (-0.17%)	⬇️
src/io.jl	100.00% <0.00%> (ø)
src/config.jl	100.00% <0.00%> (ø)
src/Memento.jl	100.00% <0.00%> (ø)
src/filters.jl	100.00% <0.00%> (ø)
... and 2 more

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