.github/workflows: add autobump

.github/autobump.txt

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+font-iosevka
+font-iosevka-aile
+font-iosevka-curly-slab
+font-iosevka-curly
+font-iosevka-etoile
+font-iosevka-slab
+font-iosevka-ss01
+font-iosevka-ss02
+font-iosevka-ss03
+font-iosevka-ss04
+font-iosevka-ss05
+font-iosevka-ss06
+font-iosevka-ss07
+font-iosevka-ss08
+font-iosevka-ss09
+font-iosevka-ss10
+font-iosevka-ss11
+font-iosevka-ss12
+font-iosevka-ss13
+font-iosevka-ss14
+font-iosevka-ss15
+font-iosevka-ss16
+font-iosevka-ss17
+font-iosevka-ss18

.github/workflows/autobump.yml

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+name: Bump casks on schedule or request
+
+on:
+  workflow_dispatch:
+    inputs:
+      casks:
+        description: Custom list of casks to livecheck and bump if outdated
+        required: false
+  schedule:
+    # Every 6 hours 23 minutes past the hour
+    - cron: "23 */6 * * *"
+
+permissions:
+  contents: read
+
+jobs:
+  autobump:
+    if: github.repository == 'Homebrew/homebrew-cask-fonts'
+    runs-on: macos-latest
+    steps:
+      - name: Set up Homebrew
+        id: set-up-homebrew
+        uses: Homebrew/actions/setup-homebrew@master
+        with:
+          core: false
+          cask: true
+          test-bot: false
+
+      - name: Configure Git user
+        uses: Homebrew/actions/git-user-config@master
+        with:
+          username: ${{ (github.event_name == 'workflow_dispatch' && github.actor) || 'BrewTestBot' }}
+
+      - name: Get list of autobump casks
+        id: autobump
+        run: echo "autobump_list=$(xargs < "$(brew --repo homebrew/cask-fonts)"/.github/autobump.txt)" >> "$GITHUB_OUTPUT"
+
+      - name: Bump casks
+        uses: Homebrew/actions/bump-packages@master
+        continue-on-error: true
+        with:
+          token: ${{ secrets.HOMEBREW_CASK_SYNC_TOKEN }}
+          casks: ${{ github.event.inputs.casks || steps.autobump.outputs.autobump_list }}
+        env:
+          HOMEBREW_TEST_BOT_AUTOBUMP: 1