Update TagBot (#168)

Author: gdalle

.github/workflows/CompatHelper.yml

@@ -15,7 +15,7 @@ jobs:
         run: which julia
         continue-on-error: true
       - name: Install Julia, but only if it is not already available in the PATH
-        uses: julia-actions/setup-julia@v1
+        uses: julia-actions/setup-julia@v2
         with:
           version: '1'
           arch: ${{ runner.arch }}
@@ -41,5 +41,10 @@ jobs:
         shell: julia --color=yes {0}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          # This repo uses Documenter, so we can reuse our [Documenter SSH key](https://documenter.juliadocs.org/stable/man/hosting/walkthrough/).
+          # If we didn't have one of those setup, we could configure a dedicated ssh deploy key `COMPATHELPER_PRIV` following https://juliaregistries.github.io/CompatHelper.jl/dev/#Creating-SSH-Key.
+          # Either way, we need an SSH key if we want the PRs that CompatHelper creates to be able to trigger CI workflows themselves.
+          # That is because GITHUB_TOKEN's can't trigger other workflows (see https://docs.github.com/en/actions/security-for-github-actions/security-guides/automatic-token-authentication#using-the-github_token-in-a-workflow).
+          # Check if you have a deploy key setup using these docs: https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/reviewing-your-deploy-keys.
           COMPATHELPER_PRIV: ${{ secrets.DOCUMENTER_KEY }}
           # COMPATHELPER_PRIV: ${{ secrets.COMPATHELPER_PRIV }}

.github/workflows/TagBot.yml

@@ -4,6 +4,22 @@ on:
     types:
       - created
   workflow_dispatch:
+    inputs:
+      lookback:
+        default: "3"
+permissions:
+  actions: read
+  checks: read
+  contents: write
+  deployments: read
+  issues: read
+  discussions: read
+  packages: read
+  pages: read
+  pull-requests: read
+  repository-projects: read
+  security-events: read
+  statuses: read
 jobs:
   TagBot:
     if: github.event_name == 'workflow_dispatch' || github.actor == 'JuliaTagBot'
@@ -12,4 +28,6 @@ jobs:
       - uses: JuliaRegistries/TagBot@v1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
+          # Edit the following line to reflect the actual name of the GitHub Secret containing your private key
           ssh: ${{ secrets.DOCUMENTER_KEY }}
+          # ssh: ${{ secrets.NAME_OF_MY_SSH_PRIVATE_KEY_SECRET }}