Update dependency io.jaegertracing:jaeger-core to v1.8.1

[mend-for-github-com]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
io.jaegertracing:jaeger-core	1.6.0 -> 1.8.1

By merging this PR, the below issues will be automatically resolved and closed:

Severity	CVSS Score	CVE	GitHub Issue
High	7.7	WS-2021-0419	#60
High	7.5	CVE-2022-25647	#72

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Release Notes

jaegertracing/jaeger-client-java (io.jaegertracing:jaeger-core)

v1.8.1

• Bump okhttp to 4.9.3 (#​834)
• Bump apache thrift version to 0.15.0
• Update gson from 2.8.6 -> 2.9.0

v1.8.0

Compare Source

• Restore support for setting null as a tag value (Resolves #​823) (#​824) -- amirhadadi

v1.7.0

• Optimize TextMapCodec::contextFromString (#​799) -- amirhadadi
• jaeger-thrift: Shade kotlin runtime + other libraries (#​801) -- ohadgur
• Drop support for Java 1.6 and 1.7 (#​802) -- Yuri Shkuro
• Reduce locking in JaegerSpan (#​795) -- amirhadadi
• Fix repeated error logging for HttpSender (#​785) -- Radek Kraus

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