rpc: Switch hyper-proxy to use rustls (backport to v0.23.x)

[mzabaluev]

Backport of #1068 to v0.23.x

[codecov-commenter]

Codecov Report

Merging #1069 (bb0fbb6) into v0.23.x (4a48416) will increase coverage by 0.4%.
The diff coverage is n/a.

❗ Current head bb0fbb6 differs from pull request most recent head fe6141d. Consider uploading reports for the commit fe6141d to get more accurate results

@@            Coverage Diff            @@
##           v0.23.x   #1069     +/-   ##
=========================================
+ Coverage     65.2%   65.7%   +0.4%     
=========================================
  Files          210     210             
  Lines        20796   20658    -138     
=========================================
- Hits         13577   13576      -1     
+ Misses        7219    7082    -137     

Impacted Files	Coverage Δ
light-client/src/types.rs	38.0% <0.0%> (-0.3%)	⬇️
tendermint/src/node.rs	63.7% <0.0%> (ø)
tendermint/src/hash.rs	67.2% <0.0%> (+35.2%)	⬆️

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