Install TagBot as a GitHub Action

[JuliaTagBot]

You're receiving this pull request because the now-deprecated Julia TagBot GitHub App is installed for this repository. This pull request installs TagBot as a GitHub Action.
If this PR does not belong in this repository for any reason, feel free to close it.

See this Discourse thread for more details and to ask questions.
Please do not comment on this pull request, because it is unlikely that I (@christopher-dG) will see it.

[coveralls]

Coverage increased (+9.7%) to 92.5% when pulling d059d9a on JuliaTagBot:master into aabafed on antimon2:master.

[codecov]

Codecov Report

Merging #8 into master will decrease coverage by 0.56%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master       #8      +/-   ##
==========================================
- Coverage   92.25%   91.69%   -0.57%     
==========================================
  Files          12       12              
  Lines         310      313       +3     
==========================================
+ Hits          286      287       +1     
- Misses         24       26       +2

Impacted Files	Coverage Δ
src/qref/QREF.jl	84.32% <0%> (-1.94%)	⬇️
src/types.jl	93.54% <0%> (+3.22%)	⬆️

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