OpenTelemetry upgrade

[Fusion]

So, @shipperizer you may have noticed that we are getting lot of requests from Dependabot to update OpenTelemetry:

• https://github.com/glauth/glauth/pull/420
• https://github.com/glauth/glauth/pull/419
• https://github.com/glauth/glauth/pull/418
• https://github.com/glauth/glauth/pull/417
• https://github.com/glauth/glauth/pull/416

I would like your opinion on these, as I believe that this would potentially introduce breaking changes.

[shipperizer]

@Fusion as discussed, i would start with https://github.com/glauth/glauth/pull/420/files that seems to cover part of the others

if build passes, then all should be fine, nothing else to touch