CompatHelper: bump compat for HTTP to 1, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the HTTP package from 0.8, 0.9 to 0.8, 0.9, 1.
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.

[quinnj]

This LGTM; I looked over the usage of HTTP.jl and no calls should be affected by some of the breaking changes in the 1.0 release.

[quinnj]

Anyone who can kick off CI/merge here? @DilumAluthge?

[codecov]

Codecov Report

Merging #332 (cc9fa90) into master (5872cf7) will increase coverage by 0.44%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #332      +/-   ##
==========================================
+ Coverage   90.66%   91.11%   +0.44%     
==========================================
  Files           2        2              
  Lines         225      225              
==========================================
+ Hits          204      205       +1     
+ Misses         21       20       -1     

Impacted Files	Coverage Δ
src/coveralls.jl	94.73% <0.00%> (-1.76%)	⬇️
src/codecovio.jl	87.38% <0.00%> (+2.70%)	⬆️

📣 Codecov can now indicate which changes are the most critical in Pull Requests. Learn more

[coveralls]

Pull Request Test Coverage Report for Build 2582853176

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 4 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.5%) to 91.441%

---

Files with Coverage Reduction	New Missed Lines	%
src/codecovio.jl	2	87.96%
src/coveralls.jl	2	94.74%

Totals
Change from base Build 2380675684:	0.5%
Covered Lines:	203
Relevant Lines:	222

---

💛 - Coveralls

[quinnj]

@DilumAluthge, CI looks good; merge and tag a new release?

[quinnj]

Thanks!