Small Improvements with the Azure Function and the GitHub Action Workflow

[dsanchezcr]

The CI/CD workflows for the azure-static-web-app.yml and api.yml are being executed twice when the PR is merged, one in the feature branch and another in the main branch. Once the PR is merged it should be executed in the main branch.

Also the Azure Function build process is showing the following warnings:

build: api/GetWeather.cs#L172Converting null literal or possible null value to non-nullable type.
build: api/GetWeather.cs#L113Converting null literal or possible null value to non-nullable type.
build: api/GetWeather.cs#L112Converting null literal or possible null value to non-nullable type.
build: api/GetWeather.cs#L111Converting null literal or possible null value to non-nullable type.
build: api/GetWeather.cs#L29Non-nullable property 'Icon' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.
build: api/GetWeather.cs#L28Non-nullable property 'Description' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.
build: api/GetWeather.cs#L24Non-nullable property 'Location' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.
build: api/GetWeather.cs#L19Non-nullable property 'Timezone' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.
build: api/GetWeather.cs#L16Non-nullable property 'Name' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.