Update semconv to 1.18.0

[jack-berg]

@jkwatson PTAL - would be good to get this late addition in before the release. Not too many changes with this update, luckily.

[codecov]

Codecov Report

Base: 91.07% // Head: 91.05% // Decreases project coverage by -0.03% ⚠️

Coverage data is based on head (b3c589d) compared to base (43c88b9).
Patch has no changes to coverable lines.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #5188      +/-   ##
============================================
- Coverage     91.07%   91.05%   -0.03%     
+ Complexity     4868     4867       -1     
============================================
  Files           548      548              
  Lines         14373    14373              
  Branches       1378     1378              
============================================
- Hits          13090    13087       -3     
- Misses          891      892       +1     
- Partials        392      394       +2     

Impacted Files	Coverage Δ
...emconv/resource/attributes/ResourceAttributes.java	100.00% <ø> (ø)
...y/exporter/internal/marshal/CodedOutputStream.java	69.59% <0.00%> (-1.17%)	⬇️
...telemetry/sdk/trace/export/BatchSpanProcessor.java	94.48% <0.00%> (-0.69%)	⬇️

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[jkwatson]

You beat me to it!