deps: bump github.com/prometheus/client_golang from 1.20.5 to 1.21.1#3482

dependabot[bot] wants to merge 1 commit intorelease/v1.4Azure/azure-container-networking:release/v1.4from

4678dependabot/go_modules/release/v1.4/github.com/prometheus/client_golang-1.21.1Azure/azure-container-networking:4678dependabot/go_modules/release/v1.4/github.com/prometheus/client_golang-1.21.1Copy head branch name to clipboard