Bump @wordpress/data to the latest version

Summary

This PR can be summarized in the following changelog entry:

[@yoast/schema-blocks] Bumps the @wordpress/data dependency to its latest version.

We were seeing failing unit tests on release/16.3, with the error message TypeError: (0 , _data.createReduxStore) is not a function.
This function comes from @wordpress/data, see here.
I ran a yarn upgrade @wordpress/data@^4.26 to bump the package to version 4.26.
This is the version which is used in Gutenberg 9.9, which is shipped with WordPress 5.7.
However in the end @wordpress/data is an external which, in production, will always match with the version shipped in Gutenberg. So we only use it in tests and for code completion.

This PR can be tested by following these steps:

Without this PR, see that yarn test in the schema-blocks leads to failing unit tests.
With this PR, the tests are fixed.
I did a quick smoke test on the Job Posting block, and saw the validation still seemed to be working (the analysis turned green after I filled in all the required blocks).

This PR affects the following parts of the plugin, which may require extra testing:
- QA could do a smoke test on the Job Posting block (for example looking at the validation), but other than that this PR does not have to be tested by QA.

[ ] This PR changes the UI in the plugin. I have added the 'UI change' label to this PR.

Fixes #