Issue with config field

[fede843]

Hi we are using this action. It was working for us until version 1.1.0 inclusive. From there, we are getting an error.

This is our workflow:

      - name: Creating config file for wait-on
        run: echo '{"headers":{"X-Header-Key":"${{ secrets.STAGING_HEALTHCHECK_KEY }}","X-Header-HealthCheck":"true"}}' > /tmp/header.json

      - name: Wating for target server
        uses: ifaxity/wait-on-action@v1.1.0
        with:
          resource: https://${{ env.stagingHost }}/lab/${{ needs.spin-up-container.outputs.domain }}/satapp/${{ env.endpointTest }}
          interval: 60000  # 1 minute
          timeout: ${{ env.MS }}
          verbose: true
          config: "/tmp/header.json"

With version 1.2.1 we get:

Run ifaxity/wait-on-action@v1.2.1
/_work/reionisation/_actions/ifaxity/wait-on-action/v1.2.1/dist/index.js:68476
        var e = new Error("Cannot find module '" + req + "'");
                ^

Error: Cannot find module '/tmp/header.json'
    at webpackEmptyContext (/_work/reionisation/_actions/ifaxity/wait-on-action/v1.2.1/dist/index.js:68476:17)
    at /_work/reionisation/_actions/ifaxity/wait-on-action/v1.2.1/dist/index.js:76187:46
    at Generator.next (<anonymous>)
    at /_work/reionisation/_actions/ifaxity/wait-on-action/v1.2.1/dist/index.js:76147:73
    at new Promise (<anonymous>)
    at __awaiter (/_work/reionisation/_actions/ifaxity/wait-on-action/v1.2.1/dist/index.js:76127:16)
    at main (/_work/reionisation/_actions/ifaxity/wait-on-action/v1.2.1/dist/index.js:76167:14)
    at /_work/reionisation/_actions/ifaxity/wait-on-action/v1.2.1/dist/index.js:76[21](https://github.com/skedgo/skedgo-java/actions/runs/9303542256/job/25606361043#step:4:22)4:5
    at /_work/reionisation/_actions/ifaxity/wait-on-action/v1.2.1/dist/index.js:76215:5
    at Object.<anonymous> (/_work/reionisation/_actions/ifaxity/wait-on-action/v1.2.1/dist/index.js:76219:3) {
  code: 'MODULE_NOT_FOUND'
}

Thanks in advance!