publish-commit-bottles: Fix syntax? (#53800)

- Sorry folks, 7dcd5e2be6 was bad:

> The workflow is not valid.
> .github/workflows/publish-commit-bottles.yml (Line: 31, Col: 13):
> Unrecognized named-value: 'context'. Located at position 1 within
> expression: context.actor != "BrewTestBot"

- Maybe if it does the `if` after the `uses`, it'll know what `context`
  is?

.github/workflows/publish-commit-bottles.yml

@@ -28,8 +28,8 @@ jobs:
             core.setOutput("name", name)
             core.setOutput("email", email)
       - name: Post comment once started
-        if: context.actor != "BrewTestBot"
         uses: actions/github-script@0.9.0
+        if: context.actor != "BrewTestBot"
         with:
           github-token: ${{secrets.HOMEBREW_GITHUB_API_TOKEN}}
           script: |