Add dependabot file

[DewaldOosthuizen]

Create a new file at .github/dependabot.yml

Add content:
"
version: 2
updates:

package-ecosystem: "gradle" # See documentation for possible values
directory: "/" # Location of package manifests
schedule:
interval: "monthly"
open-pull-requests-limit: 1
commit-message:
prefix: "python_rest_tutorial"
groups:
all-dependencies:
patterns:

• "*"
  "
  Validate structure.