Update dependencies for TLS.

[Samuel-Berger]

Fix build errors caused by unsatisfied dependencies for TLS on Ubuntu. Changes was suggested upstream.

[codecov]

Codecov Report

Merging #336 into master will decrease coverage by 2.88%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #336      +/-   ##
==========================================
- Coverage   81.90%   79.01%   -2.89%     
==========================================
  Files           8       10       +2     
  Lines        1310     1468     +158     
==========================================
+ Hits         1073     1160      +87     
- Misses        237      308      +71     

Impacted Files	Coverage Δ
src/http.rs	87.38% <0.00%> (-7.89%)	⬇️
src/title.rs	85.43% <0.00%> (-0.98%)	⬇️
src/bin/url-bot-rs.rs	56.11% <0.00%> (-0.82%)	⬇️
src/message.rs	78.49% <0.00%> (-0.20%)	⬇️
src/lib.rs	75.00% <0.00%> (ø)
src/sqlite.rs	54.76% <0.00%> (ø)
src/bin/url-bot-get.rs	0.00% <0.00%> (ø)
src/plugins/imgur.rs	96.07% <0.00%> (ø)
src/plugins/youtube.rs	93.84% <0.00%> (ø)
src/config.rs	97.63% <0.00%> (+0.86%)	⬆️

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[nuxeh]

Thanks! :)