Update module github.com/prometheus/client_golang to v1.20.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
github.com/prometheus/client_golang	v1.20.1 -> v1.20.3

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Release Notes

prometheus/client_golang (github.com/prometheus/client_golang)

v1.20.3

Compare Source

• [BUGFIX] histograms: Fix possible data race when appending exemplars. #​1608

v1.20.2

Compare Source

• [BUGFIX] promhttp: Unset Content-Encoding header when data is uncompressed. #​1596

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Configuration

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[coveralls]

Pull Request Test Coverage Report for Build 9018196906

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 78.455%

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Totals
Change from base Build 8828964079:	0.0%
Covered Lines:	579
Relevant Lines:	738

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 10721871337

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 78.726%

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Totals
Change from base Build 10527994697:	0.0%
Covered Lines:	581
Relevant Lines:	738

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💛 - Coveralls