Update module github.com/uber/jaeger-client-go to v2.26.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/uber/jaeger-client-go	require	minor	v2.25.0+incompatible -> v2.26.0

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Release Notes

uber/jaeger-client-go

v2.26.0

Compare Source

• Delete a baggage item when value is blank (#​562) -- evan.kim
• Trim baggage key when parsing (#​566) -- sicong.huang
• feat: extend configuration to support custom randomNumber func (#​555) -- NemoO_o
• Support JAEGER_TRACEID_128BIT env var (#​547) -- Yuri Shkuro
• Additional context protections (#​544) -- Joe Elliott
• Lock RemotelyControlledSampler.sampler on callbacks (#​543) -- Dima
• Upgrade build to Go 1.15 (#​539) -- Yuri Shkuro
• Upgrade to jaeger-lib@2.3.0 to fix broken codahale/hdrhistogram dependency (#​537) -- Yuri Shkuro
• Prefix TraceID/SpanID.String() with zeroes (#​533) -- Lukas Vogel
• Upgrade to OpenTracing Go 1.2 (#​525) -- Yuri Shkuro

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