[processor/geoip] Align geoIP semantic conventions attributes

[rogercoll]

Component(s)

processor/geoip

Is your feature request related to a problem? Please describe.

A PR is currently being reviewed in the semantic conventions repository, once approved and merged the GeoIP processor should align its added attributes with the semantic convention ones. For example, geo.city_name should be renamed to geo.city.name.

Describe the solution you'd like

Current attributes https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/processor/geoipprocessor/internal/convention/attributes.go should be the same as the to semantic convention ones.

Describe alternatives you've considered

No response

Additional context

No response

[github-actions]

Pinging code owners:

• processor/geoip: @andrzej-stencel @michalpristas @rogercoll

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