Update metric use the new API

[MadVikingGod]

With the landing of the new metric API uses of the old api need to be adjusted.

This PR can't be considered until there is a release of the metric API, but will be needed when these versions are updated to that release.

If you would like to test it you can use this go.work: https://gist.githubusercontent.com/MadVikingGod/0045dd54a9fba8f8104459f79454e4ad/raw/50da79ebea42f3d176e7ecb00cc3b34aa4741187/go.work

[MrAlias]

For reference: #2589

Something like go get pkgname@commit should allow you to pull in the latest in main from otel.

[codecov]

Codecov Report

Merging #3170 (34eaffb) into main (fe23c1f) will increase coverage by 3.2%.
The diff coverage is 11.3%.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #3170     +/-   ##
=======================================
+ Coverage   69.3%   72.5%   +3.2%     
=======================================
  Files        147     149      +2     
  Lines       6885    6905     +20     
=======================================
+ Hits        4775    5013    +238     
+ Misses      1995    1763    -232     
- Partials     115     129     +14     

Impacted Files	Coverage Δ
...entation/google.golang.org/grpc/otelgrpc/config.go	65.1% <0.0%> (ø)
instrumentation/host/host.go	0.0% <0.0%> (ø)
instrumentation/runtime/runtime.go	0.0% <0.0%> (ø)
...ion/github.com/gocql/gocql/otelgocql/instrument.go	62.5% <100.0%> (+62.5%)	⬆️
instrumentation/net/http/otelhttp/handler.go	84.3% <100.0%> (ø)
...ion/google.golang.org/grpc/otelgrpc/interceptor.go	84.5% <0.0%> (-1.0%)	⬇️
.../github.com/gocql/gocql/otelgocql/internal/cass.go	95.1% <0.0%> (ø)
...n/github.com/gocql/gocql/otelgocql/test/version.go	0.0% <0.0%> (ø)
...ntation/github.com/gocql/gocql/otelgocql/config.go	67.3% <0.0%> (+67.3%)	⬆️
... and 3 more

[matej-g]

I don't think it's worth opening a separate PR, but I noticed this should be just an async counter since it's monotonic. Potentially worth changing as part of switching to new API:

Suggested change

	uptime, err := r.meter.Int64ObservableUpDownCounter(
	uptime, err := r.meter.Int64ObservableCounter(

[MrAlias]

I would suggest fixing this in a follow-up PR.