ci: fix github workflows (?)

Signed-off-by: Marvin Beckers <mail@embik.me>

.github/workflows/publish.yml

@@ -24,7 +24,7 @@ jobs:
           HOMEBREW_GITHUB_PACKAGES_TOKEN: ${{ github.token }}
           HOMEBREW_GITHUB_PACKAGES_USER: ${{ github.actor }}
           PULL_REQUEST: ${{ github.event.pull_request.number }}
-        run: brew pr-pull --debug --tap=$GITHUB_REPOSITORY $PULL_REQUEST
+        run: brew pr-pull --debug --tap="$GITHUB_REPOSITORY" "$PULL_REQUEST"
 
       - name: Push commits
         uses: Homebrew/actions/git-try-push@master
@@ -36,4 +36,4 @@ jobs:
         if: github.event.pull_request.head.repo.fork == false
         env:
           BRANCH: ${{ github.event.pull_request.head.ref }}
-        run: git push --delete origin $BRANCH
+        run: git push --delete origin "$BRANCH"

.github/workflows/tests.yml

@@ -17,7 +17,7 @@ jobs:
 
       - name: Cache Homebrew Bundler RubyGems
         id: cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ${{ steps.set-up-homebrew.outputs.gems-path }}
           key: ${{ runner.os }}-rubygems-${{ steps.set-up-homebrew.outputs.gems-hash }}
@@ -29,12 +29,12 @@ jobs:
 
       - run: brew test-bot --only-tap-syntax
 
-      - run: brew test-bot --only-formulae --root-url=https://ghcr.io/v2/embik/tap
+      - run: "brew test-bot --only-formulae --root-url='https://ghcr.io/v2/embik/tap'"
         if: github.event_name == 'pull_request'
 
       - name: Upload bottles as artifact
         if: always() && github.event_name == 'pull_request'
-        uses: actions/upload-artifact@main
+        uses: actions/upload-artifact@v4
         with:
-          name: bottles
+          name: bottles_${{ matrix.os }}
           path: '*.bottle.*'