Add a section about providers versions/dependencies best practices

[obounaim]

Add a section about providers versions/dependencies best practices

• Recommendation on implementing providers version constraints. How to implement the version_constraint in the required_providers block : version = "~> 1.0.0" or version = "= 1.0.0"

• Recommendation on implementing the lock file and why it can beneficial for security with the Checksum verification

• Recommendation on how to combine both version constraints and lock file to have reproducible builds