chore: set publishConfig for test utils

[dyladan]

When the test util was made public its publish config was not set

[codecov]

Codecov Report

Merging #662 (fcfaeb9) into main (798fb2d) will decrease coverage by 1.15%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #662      +/-   ##
==========================================
- Coverage   96.68%   95.53%   -1.16%     
==========================================
  Files          13       62      +49     
  Lines         634     4365    +3731     
  Branches      124      396     +272     
==========================================
+ Hits          613     4170    +3557     
- Misses         21      195     +174     

Impacted Files	Coverage Δ
...node/opentelemetry-instrumentation-pg/src/utils.ts	97.61% <0.00%> (ø)
...opentelemetry-resource-detector-gcp/src/version.ts	0.00% <0.00%> (ø)
...e/opentelemetry-instrumentation-redis/src/utils.ts	92.98% <0.00%> (ø)
...opentelemetry-instrumentation-ioredis/src/utils.ts	91.66% <0.00%> (ø)
...ource-detector-aws/src/detectors/AwsEksDetector.ts	91.25% <0.00%> (ø)
...metry-resource-detector-aws/src/detectors/index.ts	100.00% <0.00%> (ø)
...telemetry-instrumentation-cassandra/src/version.ts	100.00% <0.00%> (ø)
...detector-aws/test/detectors/AwsEcsDetector.test.ts	100.00% <0.00%> (ø)
...etry-instrumentation-mysql2/src/instrumentation.ts	95.00% <0.00%> (ø)
...pentelemetry-instrumentation-pg/test/utils.test.ts	98.36% <0.00%> (ø)
... and 39 more