Update actions/upload-artifact action to v4

Author: renovate[bot]

.github/workflows/ci-linux.yml

@@ -44,7 +44,7 @@ jobs:
 
       - name: Upload build artifacts
         if: failure()
-        uses: actions/upload-artifact@v3.1.2
+        uses: actions/upload-artifact@v4.6.1
         with:
           name: build-artifacts-${{ matrix.swift }}-${{ github.run_id }}
           path: |

.github/workflows/ci-macos.yml

@@ -51,7 +51,7 @@ jobs:
 
       - name: Upload test artifacts
         if: failure()
-        uses: actions/upload-artifact@v3.1.2
+        uses: actions/upload-artifact@v4.6.1
         with:
           name: test-artifacts-${{ matrix.xcode }}-${{ github.run_id }}
           path: |
@@ -66,7 +66,7 @@ jobs:
 
       - name: Upload build artifacts
         if: failure()
-        uses: actions/upload-artifact@v3.1.2
+        uses: actions/upload-artifact@v4.6.1
         with:
           name: build-artifacts-${{ matrix.xcode }}-${{ github.run_id }}
           path: |