Bump actions/upload-artifact from 6.0.0 to 7.0.0 in /.github/workflows

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6.0.0 to 7.0.0.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@b7c566a...bbbca2d)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: 7.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/bleeding-edge.yaml

@@ -58,7 +58,7 @@ jobs:
       run: |
         uv run --no-sync pytest --color yes --mpl-results-path=test_results
 
-    - uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+    - uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
       if: failure()
       with:
         name: test_results

.github/workflows/ci.yml

@@ -58,7 +58,7 @@ jobs:
     - name: Run test suite
       run: uv run --no-sync pytest --color yes
 
-    - uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+    - uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
       if: failure()
       with:
         name: test_results
@@ -95,14 +95,14 @@ jobs:
     # (and especially) in case of failure.
     - name: Upload pytest-mpl report
       if: always()
-      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+      uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
       with:
         name: cmyt_pytest_mpl_results
         path: pytest_mpl_results/*
 
     - name: Upload pytest-mpl baseline
       if: always()
-      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+      uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
       with:
         name: cmyt_pytest_mpl_new_baseline
         path: pytest_mpl_new_baseline/*