chore: 0.5.2 release proposal

[dyladan]

The draft release notes: https://github.com/open-telemetry/opentelemetry-js/releases/tag/untagged-a513fa14430d4734753b

[mayurkale22]

Root package.json update is missing, same as #884

[mayurkale22]

LGTM

[codecov-io]

Codecov Report

Merging #907 into master will decrease coverage by 0.22%.
The diff coverage is 33.33%.

@@            Coverage Diff             @@
##           master     #907      +/-   ##
==========================================
- Coverage   92.87%   92.65%   -0.23%     
==========================================
  Files         244      244              
  Lines       11009    10969      -40     
  Branches     1066     1077      +11     
==========================================
- Hits        10225    10163      -62     
- Misses        784      806      +22     

Impacted Files	Coverage Δ
packages/opentelemetry-api/src/version.ts	0.00% <0.00%> (ø)
packages/opentelemetry-base/src/version.ts	0.00% <0.00%> (ø)
...s/opentelemetry-context-async-hooks/src/version.ts	0.00% <0.00%> (ø)
packages/opentelemetry-context-base/src/version.ts	0.00% <0.00%> (ø)
...opentelemetry-context-zone-peer-dep/src/version.ts	0.00% <0.00%> (ø)
...kages/opentelemetry-exporter-jaeger/src/version.ts	0.00% <0.00%> (ø)
...s/opentelemetry-exporter-prometheus/src/version.ts	0.00% <0.00%> (ø)
...kages/opentelemetry-exporter-zipkin/src/version.ts	0.00% <0.00%> (ø)
packages/opentelemetry-metrics/src/version.ts	0.00% <0.00%> (ø)
packages/opentelemetry-node/src/version.ts	0.00% <0.00%> (ø)
... and 40 more