chore: pin github action shas#18

GangGreenTemperTatum wants to merge 1 commit intomasterrootlyhq/rootly-cli:masterfrom

feature/sec-153-roll-out-github-actions-pinning-and-dependabot-cooldown-inrootlyhq/rootly-cli:feature/sec-153-roll-out-github-actions-pinning-and-dependabot-cooldown-inCopy head branch name to clipboard