Bump actions/upload-artifact from 5 to 6

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v5...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] <support@github.com>

Author: dependabot[bot]

.github/workflows/test_hr_rolling_upgrades.yml

@@ -48,7 +48,7 @@ jobs:
           artifactPrefix: "hr-rolling-upgrade"
 
       - name: Test Logs
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         if: failure()
         with:
           name: hr-rolling-upgrade-test-logs

.github/workflows/test_upgrades.yml

@@ -146,7 +146,7 @@ jobs:
           artifactPrefix: "upgrades"
 
       - name: Test Logs
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         if: failure()
         with:
           name: upgrade-test-logs

.github/workflows/test_webhooks.yml

@@ -33,7 +33,7 @@ jobs:
           artifactPrefix: "webhooks"
 
       - name: Test Logs
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         if: failure()
         with:
           name: webhook-test-logs

.github/workflows/test_without_olm.yml

@@ -52,7 +52,7 @@ jobs:
           artifactPrefix: ${{ inputs.artifactPrefix }}
 
       - name: Test Logs
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         if: failure()
         with:
           name: ${{ inputs.artifactPrefix}}-test-logs

.github/workflows/test_xsite.yml

@@ -39,7 +39,7 @@ jobs:
           artifactPrefix: "xsite"
 
       - name: Test Logs
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         if: failure()
         with:
           name: xsite-test-logs