Configure renovate for default tooling versions

[xnyo]

Configure renovate to bump the following:

plugin-ci-workflows/.github/workflows/ci.yml

Lines 285 to 288 in 2e9f98d

	DEFAULT_NODE_VERSION: "22"
	DEFAULT_GO_VERSION: "1.24"
	DEFAULT_GOLANGCI_LINT_VERSION: "1.64.8"
	DEFAULT_TRUFFLEHOG_VERSION: "3.90.6"

And also actionlint: https://github.com/grafana/plugin-ci-workflows/blob/main/.github/workflows/pr-checks-lint.yml

It should be possible with a regex custom manager: https://docs.renovatebot.com/modules/manager/regex/

[xnyo]

Example implementation in grafana-cube-datasource: grafana/grafana-cube-datasource#39

What we need for plugin-ci-workflows should be very similar to this