chore(deps): bump mikepenz/action-junit-report from 6.4.1 to 6.4.2 (#954)

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

Author: dependabot[bot]

.github/workflows/helm-chart.yml

@@ -119,7 +119,7 @@ jobs:
           helm unittest ./helm/flowfuse -t JUnit -o junit-results.xml
 
       - name: Publish Test Report
-        uses: mikepenz/action-junit-report@3a81627bfac62268172037048872e8ebd4207e6d # v6.4.1
+        uses: mikepenz/action-junit-report@d9f48fc87bc235f7e214acf696ca5abc0a986f16 # v6.4.2
         if: always()
         with:
           check_name: 'Helm chart unit tests'