Revert "Bump actions/download-artifact from 3 to 4 (#1148)" (#1154)

Author: dukecat0

.github/workflows/exhaustive_package_test.yml

@@ -39,7 +39,7 @@ jobs:
 
     steps:
       - name: Get report artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v3
         with:
           name: reports-raw
       - name: Collate reports

.github/workflows/tests.yml

@@ -114,7 +114,7 @@ jobs:
     needs: [tests, man, zipapp]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v3
         with:
           name: pipx.pyz
       - name: Upload to release