Can we add an argument for this action to place environment variables into the App Service slot container?

For example:
```YAML
jobs:
deploy:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
- name: Set up Node.js
uses: actions/setup-node@v3
with:
node-version: ${{ env.NODE_VERSION }}
cache: "yarn"
- name: npm install, build
run: yarn install --frozen-lockfile && yarn build
- name: "Deploy to Azure WebApp"
uses: azure/webapps-deploy@v2
with:
app-name: ${{ env.AZURE_WEBAPP_NAME }}
publish-profile: ${{ secrets.AZURE_WEBAPP_PUBLISH_PROFILE_STAGING }}
slot-name: ${{ env.AZURE_WEBAPP_SLOT_NAME }}
app-settings: '{"ENV_VAR1":value, "ENV_VAR2":value}' # add something like this to inject env vars to the container
```