chore: upgrade typescript to 3.6.4

[mayurkale22]

Which problem is this PR solving?

• Attempt one to fix the build.

[codecov-io]

Codecov Report

Merging #494 into master will increase coverage by 1.56%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #494      +/-   ##
==========================================
+ Coverage   95.31%   96.88%   +1.56%     
==========================================
  Files         137      129       -8     
  Lines        6973     6571     -402     
  Branches      596      570      -26     
==========================================
- Hits         6646     6366     -280     
+ Misses        327      205     -122

Impacted Files	Coverage Δ
...ckages/opentelemetry-core/src/common/NoopLogger.ts	42.85% <0%> (-14.29%)	⬇️
...metry-core/src/trace/instrumentation/BasePlugin.ts	80.55% <0%> (-5.56%)	⬇️
...entelemetry-exporter-jaeger/test/transform.test.ts	100% <0%> (ø)	⬆️
...pe-async-hooks/test/AsyncHooksScopeManager.test.ts	100% <0%> (ø)	⬆️
.../opentelemetry-exporter-jaeger/test/jaeger.test.ts	100% <0%> (ø)	⬆️
...-document-load/src/enums/PerformanceTimingNames.ts
packages/opentelemetry-web/test/WebTracer.test.ts
...y-plugin-document-load/src/enums/AttributeNames.ts
...entelemetry-plugin-postgres/test/assertionUtils.ts
...es/opentelemetry-plugin-postgres/test/testUtils.ts
... and 15 more

[markwolff]

This seems to have fixed it! Interestingly, when I SSH'd in previously, the version of typescript in yarn.lock was 3.6.4, so I'm not quite sure why this fixes the problems.

[mayurkale22]

This seems to have fixed it! Interestingly, when I SSH'd in previously, the version of typescript in yarn.lock was 3.6.4, so I'm not quite sure why this fixes the problems.

Strange, the build was failing for gRPC plugin. Did you check the typescript version for that?

[markwolff]

This seems to have fixed it! Interestingly, when I SSH'd in previously, the version of typescript in yarn.lock was 3.6.4, so I'm not quite sure why this fixes the problems.

Strange, the build was failing for gRPC plugin. Did you check the typescript version for that?

Actually I was mistaken, despite the yarn.lock resolving to 3.6.4, the typescript version in node_modules is 3.7.2, so it looks like ts version is the issue.