Bump actions/upload-artifact from 4 to 6 (#376)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -28,7 +28,7 @@ jobs:
       run: sudo pip3 install meson ninja
     - name: fetch dependencies via meson
       run: meson subprojects download
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v6
       with:
         name: r2dec-${{env.R2V}}-src-with-deps.zip
         path: |
@@ -69,7 +69,7 @@ jobs:
       run: |
         cp -f build/libcore_pdd.so .
         zip r2dec_${{env.R2V}}_linux_amd64.zip libcore_pdd.so
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v6
       with:
         name: r2dec_${{env.R2V}}_linux_amd64.zip
         path: r2dec_${{env.R2V}}_linux_amd64.zip
@@ -86,7 +86,7 @@ jobs:
 #        if [ -z "$CHECK" ]; then
 #           exit 1
 #        fi
-#    - uses: actions/upload-artifact@v4
+#    - uses: actions/upload-artifact@v6
 #      with:
 #        name: r2dec-${{env.R2V}}_amd64.deb
 #        path: p/dist/debian/*.deb
@@ -108,7 +108,7 @@ jobs:
 #        sudo installer -pkg *.pkg -target /
 #    - name: packaging
 #      run: make -C p/dist/macos
-#    - uses: actions/upload-artifact@v4
+#    - uses: actions/upload-artifact@v6
 #      with:
 #        name: r2dec-${{env.R2V}}-amd64.pkg
 #        path: p/dist/macos/r2dec*.pkg
@@ -155,7 +155,7 @@ jobs:
         copy build\*.dll "%PLUGINDIR%" || exit /b 666
         cd %BINDIR%
         radare2.exe -qc "pdd? ; af ; pdd" radare2.exe
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v6
       with:
         name: r2dec-${{env.R2V}}-w64.zip
         path: r2dec-plugin
@@ -202,7 +202,7 @@ jobs:
         copy build\*.dll "%PLUGINDIR%" || exit /b 666
         cd %BINDIR%
         radare2.exe -qc "pdd? ; af ; pdd" radare2.exe
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v6
       with:
         name: r2dec-${{env.R2V}}-w32.zip
         path: r2dec-plugin