Update CI URLs to point to new caching infrastructure

[staticfloat]

Hello there!
This is an automated pull request submitted by @staticfloat to help package authors transition their Julia installation CI setups to the new binary provider URL. Please take a look at this PR, and if there is a problem or it doesn't download correctly when CI runs, feel free to ping @staticfloat

[coveralls]

Coverage remained the same at 60.714% when pulling 21f8e09 on staticfloat:updated_ci_url into afb6215 on ajkeller34:master.

[coveralls]

Coverage remained the same at 60.714% when pulling 21f8e09 on staticfloat:updated_ci_url into afb6215 on ajkeller34:master.

[coveralls]

Coverage remained the same at 60.714% when pulling 21f8e09 on staticfloat:updated_ci_url into afb6215 on ajkeller34:master.

[coveralls]

Coverage remained the same at 60.714% when pulling 21f8e09 on staticfloat:updated_ci_url into afb6215 on ajkeller34:master.

[codecov-io]

Codecov Report

Merging #1 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master       #1   +/-   ##
=======================================
  Coverage   60.71%   60.71%           
=======================================
  Files           2        2           
  Lines          28       28           
=======================================
  Hits           17       17           
  Misses         11       11

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