Document master pin in gha bump help

Changelog for 0.11.121:

• PR #1273 Add vzzn to arkade get by @alexellis

Commits
5f37041 Document master pin in gha bump help by @alexellis
1337f33 Pin e2e workflow actions to versioned tags by @alexellis
8bd958f Map arch aliases for vzzn in arkade get by @alexellis
f095db9 Add vzzn to arkade get by @alexellis

Changes: 0.11.120...0.11.121

Generated by Derek