Release 3.3.1

[github-actions]

Checklist

1. Check if the version, base, and target branches are as you desire.
2. Make sure you have woorelease installed and set up.
3. Go to your local repo clone, and check out this PR to be able to commit any potential adjustments.

   git fetch origin release/3.3.1
   git checkout release/3.3.1

4. Simulate the release locally

   woorelease simulate --product_version=3.3.1  --wp_tested=6.7 --wc_tested=9.4 --generate_changelog https://github.com/vahidkay-meta/facebook-for-woocommerce/tree/release/3.3.1

   Note: Select y when prompted: "Would you like to add/delete them in the svn working copy?"
5. The changelog is correct.
   Check if some entries are missing, need rewording, or need to be deleted. You can edit respective PRs by changing their title, ### Changelog entry section, or assigning the changelog: none label.
   You can also edit the changelog manually in the woorelease release step later.
6. Automated tests are passing.
7. Test the package
   1. Install the /tmp/facebook-for-woocommerce.zip file on a test site
   2. Confirm it activates without warnings/errors and is showing the right versions
   3. Run a few basic smoke tests

Next steps

1. Do the final release

   woorelease release --product_version=3.3.1  --wp_tested=6.7 --wc_tested=9.4  --generate_changelog https://github.com/vahidkay-meta/facebook-for-woocommerce/tree/release/3.3.1
   

   When prompted for changelog entries, double-check and apply any changes if needed.
2. Go to https://github.com/vahidkay-meta/facebook-for-woocommerce/releases/3.3.1, generate GitHub release notes, and paste them as a comment here.
3. Merge this PR after the new release is successfully created and the version tags are updated.
4. Merge trunk to develop (PR), if applicable for this repo.
5. Update documentation
   • Publish any new required docs
   • Update triggers/rules/actions listing pages
6. Mark related ideas complete on the feature requests page.

After deploy

1. Confirm the release deployed correctly to WPORG.
   • Ensure you can download and install the latest release from WPORG and WCCOM.
   • We've had an issue where the release tag (e.g. 2.6.1) wasn't present in the svn tags/ folder.
   • Troubleshooting processes when the release version doesn't exist in the svn tags/ folder:
     1. Check the version by Stable tag in https://plugins.svn.wordpress.org/facebook-for-woocommerce/trunk/readme.txt to see if the new release is committed to trunk
     2. If the above version is the same as the one just released, then you can make up the missed version tag by svn cp https://plugins.svn.wordpress.org/facebook-for-woocommerce/trunk https://plugins.svn.wordpress.org/facebook-for-woocommerce/tags/X.X.X -m "Tagging version X.X.X". Please note that the X.X.X is used as a placeholder but should be replaced with the actual release version (e.g., 1.5.0).
     3. Wait for a while, and the zip file should be able to download from: https://downloads.wordpress.org/plugin/facebook-for-woocommerce.x.x.x.zip
2. Close the release milestone.
3. Publish any documentation updates relating to the release:
   • User documentation
   • Any changes to privacy/tracking

[vahidkay-meta]

Fix - Sale price effective date by @vinkmeta in #2809
Fix - Sync stock quantity when available by @mshymon in #2811
Fix - Sync product GTIN when available by @mshymon in #2810