Prom exporter update

[zeitlinger]

Update to latest declarative configuration.

See open-telemetry/opentelemetry-configuration#474 for a clarification in semantics.

[codecov]

Codecov Report

❌ Patch coverage is 93.33333% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.10%. Comparing base (0766428) to head (57bbd9c).

Files with missing lines	Patch %	Lines
...ometheus/internal/PrometheusComponentProvider.java	66.66%	0 Missing and 2 partials ⚠️
.../exporter/prometheus/Otel2PrometheusConverter.java	80.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #7934      +/-   ##
============================================
+ Coverage     90.09%   90.10%   +0.01%     
- Complexity     7432     7447      +15     
============================================
  Files           834      835       +1     
  Lines         22537    22574      +37     
  Branches       2236     2240       +4     
============================================
+ Hits          20304    20340      +36     
+ Misses         1532     1531       -1     
- Partials        701      703       +2     

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