[deb][pkg] Add python3-boto3 to depends

Now that the python3-boto3 package is in the `main` pocket we can now
add to `Depends`. This will enhance future deb packages to allow S3
uploads.

Signed-off-by: Arif Ali <arif.ali@canonical.com>

debian/control

@@ -23,7 +23,7 @@ X-Python3-Version: >= 3.6
 
 Package: sosreport
 Architecture: any
-Depends: ${python3:Depends}, ${misc:Depends}, python3-pexpect, python3-magic, python3-packaging
+Depends: ${python3:Depends}, ${misc:Depends}, python3-pexpect, python3-magic, python3-packaging, python3-boto3
 Description: Set of tools to gather troubleshooting data from a system
  Sos is a set of tools that gathers information about system
  hardware and configuration. The information can then be used for