Use the different synxtax for an in-repo usage

.github/workflows/ci-backend.yml

@@ -109,7 +109,7 @@ jobs:
           python-version: ${{ steps.setup-python.outputs.python-version }}
       - name: Install system dependencies
         timeout-minutes: 12
-        uses: ./.github/actions/apt-install
+        uses: $/.github/actions/apt-install
         with:
           packages: unpaper tesseract-ocr imagemagick ghostscript poppler-utils
       - name: Configure ImageMagick

.github/workflows/ci-frontend.yml

@@ -232,7 +232,7 @@ jobs:
         run: cd src-ui && pnpm install --frozen-lockfile
       - name: Install backend system dependencies
         timeout-minutes: 12
-        uses: ./.github/actions/apt-install
+        uses: $/.github/actions/apt-install
         with:
           packages: libmagic1
       - name: Install backend dependencies

.github/workflows/ci-release.yml

@@ -71,7 +71,7 @@ jobs:
           uv sync --python "${PYTHON_VERSION}" --dev --frozen
       - name: Install system dependencies
         timeout-minutes: 12
-        uses: ./.github/actions/apt-install
+        uses: $/.github/actions/apt-install
         with:
           packages: gettext liblept5
       # ---- Build Documentation ----

.github/workflows/translate-strings.yml

@@ -26,7 +26,7 @@ jobs:
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
       - name: Install system dependencies
         timeout-minutes: 12
-        uses: ./.github/actions/apt-install
+        uses: $/.github/actions/apt-install
         with:
           packages: gettext
       - name: Install uv