fix(ci): fix publish workflow permissions

[bthuilot]

Summary

Fixes workflow permission for publish

Change Type

• Non-functional (chore, refactoring, docs)

Is this a breaking change?

• No

[jszwedko]

I tried to test this branch, but we currently have workflows set to readonly so it ran into that. We'll have to test after re-enabling.

[jszwedko]

Or perhaps we need to add these permissions to workflows that call this one like https://github.com/vectordotdev/vector/blob/master/.github/workflows/custom_builds.yml

[bthuilot]

@jszwedko updated custom_build.yml because i think that will require it too

[jszwedko]

@jszwedko updated custom_build.yml because i think that will require it too

Thanks! I added it to the others that call publish.yml in 2cc7bf4

[jszwedko]

Testing here: https://github.com/vectordotdev/vector/actions/runs/11818786288

[pront]

Note: The nightly job https://github.com/vectordotdev/vector/actions/runs/11810954933/attempts/1 passed.