Bug fixes

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Use beta4 release instead of beta3:

#2999425
The module was not compatible with dynamic_page_cache and required a cache clear before the new data policy was in effect. This change ensures that the redirect to the data policy is run before the dynamic page cache.

This is the Search API Attachments 1.17 release, fixing one bug in search_api_attachments_references submodule.

The alone commit merged since release 1.16:

* Issue #2998963 by andywhale, izus: Empty file reference field causes a warning to occur

• Issue #2956025: Initial structure for [Varbase Core] feature module.
• Issue #2956371: Move language configs for [Varbase Page] to optional, and Activate configurations on install to work with varbase internationalization.
• Issue #2959471: Change [Varbase Core] config to work with [Media] Drupal core module.

• Issue #2956099: Initial structure for [Vartheme Admin] theme 8.x-5.x
• Issue #2988820: Changed the composer.json for [Vartheme Admin] theme.
• Issue #2997271: Switch [Vartheme Admin] from restricted composer require to open, only for not patched themes

• Issue #2955870: Start a new branch for [Vartheme] version: 8.x-5.x-dev and extra branch-alias with dev-8.x-5.x to 8.5.x-dev.
• Issue #2956132 by Ahmad Abbad: Remove gitignore from Vartheme.
• Issue #2959442: Fix issues with Bootstrap-rtl call for bootstrap-rtl/less/mixins-rtl with only needed mixins.

• Issue #2956039: Initial structure for [Varbase Landing] feature module.
• Issue #2956380: Move language configs for [Varbase Landing] to optional, and Activate configurations on install to work with Varbase internationalization.
• Issue #2977237: Enable [Paragraphs features] and [Paragraphs asymmetric translation widgets] modules.