chore: skip david-dm.org url from docs-test

[mayurkale22]

Which problem is this PR solving?

• https://david-dm.org/ services (both website and badges) are generally fine, but it occasionally suffers. It causes our CircleCI builds to fail, this PR will skip checking the david urls from docs-test job.

[obecny]

lgtm, however we are loosing validating the links for david-dm.org when this service is working fine. I wonder if there is any way to ignore checking only when this service is not working correctly ?

[codecov-io]

Codecov Report

Merging #660 into master will increase coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #660      +/-   ##
=========================================
+ Coverage   89.74%   89.8%   +0.05%     
=========================================
  Files         214     213       -1     
  Lines       10164   10161       -3     
  Branches      929     931       +2     
=========================================
+ Hits         9122    9125       +3     
+ Misses       1042    1036       -6

Impacted Files	Coverage Δ
...kages/opentelemetry-plugin-dns/test/utils/utils.ts	33.33% <0%> (-26.67%)	⬇️
packages/opentelemetry-plugin-dns/src/version.ts	100% <0%> (ø)	⬆️
...telemetry-plugin-grpc/test/utils/assertionUtils.ts	100% <0%> (ø)	⬆️
.../opentelemetry-plugin-dns/test/utils/assertSpan.ts	100% <0%> (ø)	⬆️
...in-postgres/opentelemetry-plugin-pg/src/version.ts	100% <0%> (ø)	⬆️
...try-plugin-dns/test/functionals/dns-enable.test.ts	100% <0%> (ø)	⬆️
...try-node/test/instrumentation/PluginLoader.test.ts	100% <0%> (ø)	⬆️
packages/opentelemetry-plugin-grpc/src/version.ts	100% <0%> (ø)	⬆️
...es/opentelemetry-exporter-collector/test/helper.ts	100% <0%> (ø)	⬆️
packages/opentelemetry-node/src/config.ts
... and 2 more

[mayurkale22]

lgtm, however we are loosing validating the links for david-dm.org when this service is working fine. I wonder if there is any way to ignore checking only when this service is not working correctly ?

Hmm good point, I was tring to see if we can skip based on the error code (502 - bad gateway) - looks like this option is not available with linkinator. Let me know if you have better solution to handle this.

[mayurkale22]

I think we should merge this one, david-dm.org is down again.