Bump actions/upload-artifact from 2 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 2 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v2...v4)

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

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

.github/workflows/CI.yml

@@ -181,7 +181,7 @@ jobs:
         ci/run_tests.sh "$PWD/${{ env.FPM_RELEASE }}"
 
     - name: Upload artifact
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: ${{ env.FPM_RELEASE }}
         path: ${{ env.FPM_RELEASE }}
@@ -257,7 +257,7 @@ jobs:
         move fpm-installer.exe fpm-installer-${{ env.VERSION }}.exe
 
     - name: Upload artifact
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: fpm-installer
         path: ci/fpm-installer-${{ env.VERSION }}.exe

.github/workflows/release.yml

@@ -35,7 +35,7 @@ jobs:
         PREFIX: fpm-${{ env.VERSION }}/
 
     - name: Upload artifact
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: ${{ env.OUTPUT }}
         path: ${{ env.OUTPUT }}
@@ -104,7 +104,7 @@ jobs:
         ${{ env.EXE }} build 
 
     - name: Upload artifact
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: ${{ env.OUTPUT }}
         path: ${{ env.OUTPUT }}