Install requests for auto-merge CI

[CasperWA]

Fixes #293

[codecov]

Codecov Report

Merging #294 (63de566) into develop (b03ae86) will decrease coverage by 0.29%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop     #294      +/-   ##
===========================================
- Coverage    92.93%   92.64%   -0.30%     
===========================================
  Files           32       32              
  Lines         1373     1373              
===========================================
- Hits          1276     1272       -4     
- Misses          97      101       +4     

Flag	Coverage Δ
aiida	89.07% <ø> (-0.30%)	⬇️
mongo	79.16% <ø> (ø)

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Impacted Files	Coverage Δ
aiida_optimade/translators/entities.py	81.92% <0.00%> (-4.82%)	⬇️

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