Feature Request: Allow a file as context parameter

[sarasensible]

I can easily update my Kubeconfig to contain the credentials for my EKS cluster using aws eks update-kubeconfig --name=$CLUSTER. However I can't easily pass in this Kubeconfig to this github action. It would make it much easier to use if the context parameter would take a file name or if there were an alternate parameter that would take it instead of going through acrobatics to convert the contents of the file into a string for use.

[sarasensible]

Workaround in which I don't use this action:

      - name: AWS Get Kubeconfig
        id: getkube
        run: |
          aws eks update-kubeconfig --name=${{ github.event.inputs.clustername }}
      - name: Install Kubescape
        run: |
          curl -s https://raw.githubusercontent.com/kubescape/kubescape/v2.3.4/install.sh | /bin/bash
      - name: Run Kubescape
        run: |
          ~/.kubescape/bin/kubescape scan framework nsa