Bump go.opentelemetry.io/otel to 0.18.0

[bogdandrutu]

Signed-off-by: Bogdan Drutu bogdandrutu@gmail.com

[codecov]

Codecov Report

Merging #2625 (76bdab2) into main (ccc3f95) will increase coverage by 22.14%.
The diff coverage is 97.05%.

@@             Coverage Diff             @@
##             main    #2625       +/-   ##
===========================================
+ Coverage   69.18%   91.32%   +22.14%     
===========================================
  Files          34      431      +397     
  Lines        1603    21451    +19848     
===========================================
+ Hits         1109    19591    +18482     
- Misses        420     1392      +972     
- Partials       74      468      +394     

Flag	Coverage Δ
integration	69.24% <ø> (+0.06%)	⬆️
unit	90.23% <97.05%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
exporter/stackdriverexporter/spandata.go	83.83% <80.00%> (ø)
exporter/awsemfexporter/datapoint.go	100.00% <100.00%> (ø)
exporter/uptraceexporter/translator.go	97.65% <100.00%> (ø)
receiver/statsdreceiver/protocol/statsd_parser.go	98.02% <100.00%> (ø)
exporter/datadogexporter/metadata/ec2/ec2.go	47.50% <0.00%> (ø)
exporter/stackdriverexporter/stackdriver.go	77.22% <0.00%> (ø)
exporter/signalfxexporter/hostmetadata/metadata.go	100.00% <0.00%> (ø)
receiver/kubeletstatsreceiver/kubelet/metadata.go	100.00% <0.00%> (ø)
exporter/awsprometheusremotewriteexporter/auth.go	75.60% <0.00%> (ø)
... and 413 more

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