Upgrade `Nuget.Client` from `6.11.1.2` to `6.12.0.127` #26851

Job	Run time
ci (bundler, bundler, bundler)	14s
ci (cargo, cargo, cargo)	15s
Lint	55s
ci (common, common, common)	1m 2s
Updater	2m 18s
ci (composer, composer, composer)	13s
ci (docker, docker, docker)	15s
integration	4m 0s
ci (elm, elm, elm)	12s
ci (git_submodules, git_submodules, gitsubmodule)	13s
ci (github_actions, github_actions, github-actions)	14s
ci (go_modules, go_module, gomod)	14s
ci (gradle, gradle, gradle)	10s
ci (hex, hex, mix)	12s
ci (maven, maven, maven)	13s
ci (npm_and_yarn, npm_and_yarn, npm)	10s
ci (nuget, nuget, nuget)	17m 10s
ci (pub, pub, pub)	11s
ci (python, python, pip)	15s
ci (python, python_slow, pip)	12s
ci (swift, swift, swift)	12s
ci (devcontainers, devcontainers, devcontainers)	15s
ci (terraform, terraform, terraform)	11s
	29m 16s

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