fix: pin the pip-tools version to 6.6.2

[tecoholic]

Description

The pip-tools version currently used breaks with the error ImportError: cannot import name 'BAR_TYPES' from 'pip._internal.cli.progress_bars' during the deployment. This is fixed in the version 6.6.2 as reported in jazzband/pip-tools#1617.

So, this commit pins the pip-tools version to 6.6.2 for the open-release/nutmeg.master

Ticket Link

NA

Similar fixes

• fix: upgrade pip-tools to fix bug in versions 6.6.0 and 6.6.1 xblock-lti-consumer#255
• fix: upgrade pip-tools to fix bug in version 6.6.1 edx-ora2#1862
• fix: upgrade pip-tools to fix bug in versions 6.6.0 and 6.6.1 super-csv#105

Post-review

• Squash commits into discrete sets of changes
• Ensure that once the changes have been deployed to stage, prod is manually deployed

[openedx-webhooks]

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[mphilbrick211]

Hi @tecoholic! Thanks for this contribution - I'm looking into getting tests run on this PR for you.

[mphilbrick211]

@e0d would you mind authorizing tests on this? Thanks!

[e0d]

Done

[mphilbrick211]

Hi @tecoholic - you should be all set to re-run the failing tests. Thanks!

[tecoholic]

@mphilbrick211 The CI seems broken and doesn't seem to be connected to the changes introduced in the PR. How do we handle this? Should we ask someone with maintainer rights to check on this?

[mphilbrick211]

@macdiesel would you mind taking a look at the author's question above?

[mphilbrick211]

Hi @macdiesel - friendly follow-up on this :)

[mphilbrick211]

Hi @macdiesel - just checking in on this :)

[mphilbrick211]

Hi @macdiesel - friendly ping on this!

[openedx-webhooks]

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