bump jersey to 2.38 to suppress repeating WARNs by HTTPPost and others #2682

[mkhludnev]

• [Bug]: unwanted loglines REST client #2682 HTTPPost repeats jersey warn on every request
• warn less (just once for all clients) about missing providers eclipse-ee4j/jersey#5165 addresses it and made fix available in jersey 2.38

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[hansva]

Thanks for the PR! Sorry about the late merge, wanted to create the 2.5 before merging this