chore(deps): bump mikepenz/action-junit-report from 6.3.1 to 6.4.0 (#859)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/helm-chart.yml

@@ -99,7 +99,7 @@ jobs:
           helm unittest ./helm/flowfuse -t JUnit -o junit-results.xml
 
       - name: Publish Test Report
-        uses: mikepenz/action-junit-report@49b2ca06f62aa7ef83ae6769a2179271e160d8e4 # v6.3.1
+        uses: mikepenz/action-junit-report@bccf2e31636835cf0874589931c4116687171386 # v6.4.0
         if: always()
         with:
           check_name: 'Helm chart unit tests'