fix: this part wasn't rendered right

Author: jessesimpson36

.github/workflows/test-integration-template.yaml

@@ -249,9 +249,11 @@ jobs:
           chart-dir: "${{ inputs.camunda-upgrade-helm-dir || inputs.camunda-helm-dir }}"
       - name: Add Helm repos and dependencies
         run: |
-          export chartPath="charts/${{ inputs.camunda-upgrade-helm-dir || inputs.camunda-helm-dir }}"
+          export chartPath="charts/$CHART_PATH"
           make helm.repos-add
           make helm.dependency-update
+        env:
+          CHART_PATH: ${{ inputs.camunda-upgrade-helm-dir || inputs.camunda-helm-dir }}
       - name: Create test namespace
         run: |
           echo $TEST_NAMESPACE