Fix py module release

[wslulciuc]

Problem

Our py modules release fails as the result of applying the bump2version cmd twice in new-version.sh (see failed release CI job):

  File "setup.py", line 27
    version="version="0.24.0"",
                         ^
SyntaxError: invalid syntax

Exited with code exit status 1

Solution

Only bump the py module version when preparing the next development version.

Checklist

• You've signed-off your work
• Your changes are accompanied by tests (if relevant)
• Your change contains a small diff and is self-contained
• You've updated any relevant documentation (if relevant)
• You've updated the CHANGELOG.md with details about your change under the "Unreleased" section (if relevant, depending on the change, this may not be necessary)
• You've versioned your .sql database schema migration according to Flyway's naming convention (if relevant)
• You've included a header in any source code files (if relevant)

[merobi-hub]

LGTM, thanks @wslulciuc