[BUG] Error 405 in test creation with v1.1.12 action release

I ran the GitHub action with the following input:
```yml
- name: "Azure Load Testing"
uses: azure/load-testing@v1
with:
loadTestConfigFile: "./test/performance/azure-load-testing/launch-configs/capacity/capacity-laliga.yml"
loadTestResource: "LaLiga-Replication"
resourceGroup: "baikal-${{ github.event.inputs.STATE `}}-state-rg"
```

This uses the action version v1.1.12 and returns:
`Unable to fetch the response. Please re-run or contact support if the issue persists. Status code: 405`

When I run the previous version everything works as expected:
```yml
- name: "Azure Load Testing"
uses: azure/load-testing@v1.1.11
with:
loadTestConfigFile: "./test/performance/azure-load-testing/launch-configs/capacity/capacity-laliga.yml"
loadTestResource: "LaLiga-Replication"
resourceGroup: "baikal-${{ github.event.inputs.STATE `}}-state-rg"
```