Bump actions/upload-artifact from 4 to 5

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 5.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v5)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/pd-externals.yml

@@ -17,7 +17,7 @@ jobs:
         run: |
           make install DESTDIR=build PDLIBDIR=
       - name: upload Linux externals
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: linux-externals
           path: apf/examples/pure-data/build/*
@@ -40,7 +40,7 @@ jobs:
         run: |
           make install DESTDIR=build PDLIBDIR=
       - name: upload macOS externals
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: macos-externals
           path: apf/examples/pure-data/build/*
@@ -79,7 +79,7 @@ jobs:
         run: |
           make install DESTDIR=build PDLIBDIR=
       - name: upload Windows externals
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: windows-externals
           path: apf/examples/pure-data/build/*
@@ -120,7 +120,7 @@ jobs:
         run: |
           deken package -v $(git describe --tags --always) --objects examples/pure-data/objects.txt apf_example
       - name: Upload deken package
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: Deken package
           path: "*.dek*"