Bump actions/upload-artifact from 3 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v3...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/behave_tests.yml

@@ -80,7 +80,7 @@ jobs:
 
       - name: Upload Junit Reports
         if: always()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: behave_junit_reports_${{matrix.os}}_${{matrix.python-version}}
           path: "**/junit_reports/*.xml"

.github/workflows/sphinx_build.yml

@@ -35,7 +35,7 @@ jobs:
           linux: cd /home/runner/work/purpleair_data_logger/purpleair_data_logger/sphinx_docs_build ;
                  make html
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: HTML Documentation
           path: docs/