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/build-and-test.yml

@@ -37,7 +37,7 @@ jobs:
           scan-build -o ~/scan-build-report cmake --build build
       - name: Upload scan-build report
         if: failure()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: scan-build-report
           path: ~/scan-build-report/

.github/workflows/build-docs.yml

@@ -27,7 +27,7 @@ jobs:
           cmake -DSKIP_SRC=1 ..
           make doc-gmp
       - name: Upload GMP documentation artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: gmp.html
           path: build/doc/gmp.html