fix(deps): 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	v1.20.2 -> 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

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: src/autoscaler/go.sum

Command failed: go get -d -t ./...
go: -d flag is deprecated. -d=true is a no-op
go: downloading golang.org/x/crypto v0.26.0
go: downloading code.cloudfoundry.org/loggregator-agent-release/src v0.0.0-20240905083138-96d9f8d605dd
go: downloading golang.org/x/net v0.28.0
go: downloading code.cloudfoundry.org/tlsconfig v0.3.0
go: downloading github.com/prometheus/common v0.58.0
go: code.cloudfoundry.org/app-autoscaler/src/autoscaler/api/publicapiserver imports
	code.cloudfoundry.org/app-autoscaler/src/autoscaler/helpers/apis/scalinghistory: cannot find module providing package code.cloudfoundry.org/app-autoscaler/src/autoscaler/helpers/apis/scalinghistory
go: code.cloudfoundry.org/app-autoscaler/src/autoscaler/api/broker tested by
	code.cloudfoundry.org/app-autoscaler/src/autoscaler/api/broker.test imports
	code.cloudfoundry.org/app-autoscaler/src/autoscaler/fakes: cannot find module providing package code.cloudfoundry.org/app-autoscaler/src/autoscaler/fakes

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud