action: reflow, switch to download-artifact@v4

Signed-off-by: William Woodruff <[email protected]>

Author: woodruffw

action.yml

@@ -1,5 +1,4 @@
 ---
-
 name: checkout-python-sdist
 description: >-
   GitHub Action for unpacking the source out of
@@ -30,38 +29,36 @@ inputs:
 runs:
   using: composite
   steps:
-  - name: Error out on empty workflow artifact input
-    if: >-
-      !inputs.workflow-artifact-name
-    run: exit 1
-    shell: bash
-  - name: Error out on empty tarball input
-    if: >-
-      !inputs.source-tarball-name
-    run: exit 1
-    shell: bash
-  - name: Retrieve the dists from a GHA artifact
-    uses: actions/download-artifact@v3
-    with:
-      name: ${{ inputs.workflow-artifact-name }}
-      path: ${{ github.action_path }}/.tmp
-  - name: >-
-      Get a *NIX-style workspace directory absolute path
-    # NOTE: This is necessary because attempting to use ${{ github.workspace }}
-    # NOTE: in the `tar` command makes it error out under Windows workers. This
-    # NOTE: is supposedly happening because `shell: bash` uses Git Bash (v4)
-    # NOTE: and not MINGW Bash (v5) which does not have this problem.
-    id: workdir
-    run: >-
-      echo path="$(pwd)" >> "${GITHUB_OUTPUT}"
-    working-directory: ${{ github.workspace }}
-    shell: bash
-  - name: Get the source out of the tarball
-    run: >-
-      tar xzvf ${{ inputs.source-tarball-name }}
-      --directory='${{ steps.workdir.outputs.path }}'
-      --strip-components=1
-    working-directory: ${{ github.action_path }}/.tmp
-    shell: bash
-
-...
+    - name: Error out on empty workflow artifact input
+      if: >-
+        !inputs.workflow-artifact-name
+      run: exit 1
+      shell: bash
+    - name: Error out on empty tarball input
+      if: >-
+        !inputs.source-tarball-name
+      run: exit 1
+      shell: bash
+    - name: Retrieve the dists from a GHA artifact
+      uses: actions/download-artifact@v4
+      with:
+        name: ${{ inputs.workflow-artifact-name }}
+        path: ${{ github.action_path }}/.tmp
+    - name: >-
+        Get a *NIX-style workspace directory absolute path
+      # NOTE: This is necessary because attempting to use ${{ github.workspace }}
+      # NOTE: in the `tar` command makes it error out under Windows workers. This
+      # NOTE: is supposedly happening because `shell: bash` uses Git Bash (v4)
+      # NOTE: and not MINGW Bash (v5) which does not have this problem.
+      id: workdir
+      run: >-
+        echo path="$(pwd)" >> "${GITHUB_OUTPUT}"
+      working-directory: ${{ github.workspace }}
+      shell: bash
+    - name: Get the source out of the tarball
+      run: >-
+        tar xzvf ${{ inputs.source-tarball-name }}
+        --directory='${{ steps.workdir.outputs.path }}'
+        --strip-components=1
+      working-directory: ${{ github.action_path }}/.tmp
+      shell: bash