workflow: update actions

Update checkout to v4.
Make touch one line.
Use v4 instead of entire version number.

.github/workflows/publish.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           persist-credentials: false
 
@@ -27,11 +27,10 @@ jobs:
         # .nojekyll: to tell GH Pages to not rebuild (lol)
         # CNAME: to tell GH Pages about the domain name
       - name: Post-Jekyll build copy files
-        run: |
-          touch _site/.nojekyll
+        run: touch _site/.nojekyll
 
       - name: Deploy 🚀
-        uses: JamesIves/github-pages-deploy-action@v4.4.1
+        uses: JamesIves/github-pages-deploy-action@v4
         with:
           branch: gh-pages # The branch the action should deploy to.
           folder: _site # The folder the action should deploy.

.github/workflows/test.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           persist-credentials: false