Bump actions/upload-artifact from 5 to 6

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/checks.yml

@@ -86,7 +86,7 @@ jobs:
         run: poetry run -- nox -s lint:code
 
       - name: Upload Artifacts
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: lint-python${{ matrix.python-version }}
           path: |
@@ -139,7 +139,7 @@ jobs:
         run: poetry run -- nox -s lint:security
 
       - name: Upload Artifacts
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: security-python${{ matrix.python-version }}
           path: .security.json
@@ -217,7 +217,7 @@ jobs:
         run: poetry run -- nox -s test:unit -- --coverage
 
       - name: Upload Artifacts
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: coverage-python${{ matrix.python-version }}-fast
           path: .coverage

.github/workflows/report.yml

@@ -41,7 +41,7 @@ jobs:
         run: poetry run -- nox -s project:report -- --format json | tee metrics.json
 
       - name: Upload Artifacts
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: metrics.json
           path: metrics.json

.github/workflows/slow-checks.yml

@@ -35,7 +35,7 @@ jobs:
         run: poetry run -- nox -s test:integration -- --coverage --db-version ${{ matrix.exasol-version }}
 
       - name: Upload Artifacts
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: coverage-python${{ matrix.python-version }}-slow
           path: .coverage