Upload artifacts on CI failure (#5021)

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>
Co-authored-by: Laurenz <laurmaedje@gmail.com>

.github/workflows/ci.yml

@@ -34,6 +34,25 @@ jobs:
       - uses: Swatinem/rust-cache@v2
       - run: cargo test --workspace --no-run
       - run: cargo test --workspace --no-fail-fast
+      - name: Upload rendered test output
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: tests-rendered-${{ matrix.os }}
+          path: tests/store/render/**
+          retention-days: 3
+      - name: Update test artifacts
+        if: failure()
+        run: |
+          cargo test --workspace --test tests -- --update
+          echo 'updated_artifacts=1' >> "$GITHUB_ENV"
+      - name: Upload updated reference output (for use if the test changes are desired)
+        if: failure() && env.updated_artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: tests-updated-${{ matrix.os }}
+          path: tests/ref/**
+          retention-days: 3
 
   checks:
     name: Check clippy, formatting, and documentation