CompatHelper: bump compat for Bijectors to 0.14, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the Bijectors package from 0.13.18 to 0.13.18, 0.14.
This keeps the compat entries for earlier versions.

Note: I have not tested your package with this new compat entry.
It is your responsibility to make sure that your package tests pass before you merge this pull request.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.78%. Comparing base (18af48a) to head (7ace82e).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #706      +/-   ##
==========================================
- Coverage   79.23%   77.78%   -1.46%     
==========================================
  Files          30       30              
  Lines        4214     3925     -289     
==========================================
- Hits         3339     3053     -286     
+ Misses        875      872       -3     

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[coveralls]

Pull Request Test Coverage Report for Build 11584500171

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 16 unchanged lines in 5 files lost coverage.
• Overall coverage decreased (-1.8%) to 77.843%

---

Files with Coverage Reduction	New Missed Lines	%
src/model.jl	1	92.47%
src/contexts.jl	1	74.44%
src/threadsafe.jl	2	51.38%
src/abstract_varinfo.jl	3	74.63%
src/context_implementations.jl	9	57.79%

Totals
Change from base Build 11518673522:	-1.8%
Covered Lines:	3053
Relevant Lines:	3922

---

💛 - Coveralls