fix(deps): update module github.com/prometheus/client_golang to v1.20.2

This MR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
github.com/prometheus/client_golang	v1.20.0 -> v1.20.2

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Release Notes

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

v1.20.2

Compare Source

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

v1.20.1

Compare Source

This release contains the critical fix for the issue. Thanks to @​geberl, @​CubicrootXYZ, @​zetaab and @​timofurrer for helping us with the investigation!

• [BUGFIX] process-collector: Fixed unregistered descriptor error when using process collector with PedanticRegistry on Linux machines. #​1587

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