CI: Bump actions/upload-artifact from 6 to 7 (#1863)

Author: dependabot[bot]

.github/workflows/abi.yaml

@@ -50,7 +50,7 @@ jobs:
         env: ${{ matrix.env || env }}
 
       - name: Upload test results (on failure)
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: abi-check

.github/workflows/ci.yaml

@@ -67,7 +67,7 @@ jobs:
         uses: rhaschke/industrial_ci@master
 
       - name: Upload test artifacts (on failure)
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: test-results

.github/workflows/prerelease.yaml

@@ -37,7 +37,7 @@ jobs:
         uses: rhaschke/industrial_ci@master
 
       - name: Upload test artifacts (on failure)
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: test-results