dev: add RECAPTCHA environment variables #2897

[abhidg]

This fixes loading the portal when running locally, but does not affect the dev deployment, which is still broken. I checked the EKS deployment and it sets RECAPTCHA_SITE_KEY, which should be read by the curator service, but is not.

edit: Interestingly, if I change the REACT_APP_RECAPTCHA_SITE_KEY to RECAPTCHA_SITE_KEY everywhere, the portal does not work locally. Not sure why that is.

[codecov-commenter]

Codecov Report

Merging #2908 (889a305) into main (aa9388c) will decrease coverage by 0.18%. The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main    #2908      +/-   ##
==========================================
- Coverage   60.51%   60.33%   -0.19%     
==========================================
  Files          21       21              
  Lines        1312     1316       +4     
  Branches      198      199       +1     
==========================================
  Hits          794      794              
- Misses        518      522       +4     

Impacted Files	Coverage Δ
...cation/curator-service/api/src/controllers/auth.ts	44.41% <0.00%> (-0.48%)	:arrow_down:
...ation/curator-service/api/src/controllers/cases.ts	48.17% <0.00%> (ø)
...ation/curator-service/api/src/controllers/users.ts	67.92% <ø> (ø)
verification/curator-service/api/src/model/user.ts	66.66% <ø> (ø)
...ervice/api/src/util/single-window-rate-limiters.ts	37.50% <ø> (ø)
...ation/curator-service/api/src/util/validate-env.ts	100.00% <ø> (ø)

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