docs: Bump tested version to 7.1

[jao-tawk]

Whats new

Bump the version from 6.9 to 7.1. Run the Full test suite and pin 7.1 wordpress image to test it properly 100% in latest version of wordpress.

[greptile-apps]

Greptile Summary

This PR raises the plugin's tested WordPress version to 7.1 and prepares release 0.9.4 by synchronizing the Composer, npm, WordPress plugin, stable-tag, and widget-comment version declarations.

• Updates the supported WordPress version in the plugin readme.
• Advances user-facing and package version declarations from 0.9.3 to 0.9.4.
• Leaves the npm lockfile's root version unchanged at 0.9.3.

Confidence Score: 5/5

The PR appears safe to merge, with only a non-blocking npm lockfile metadata inconsistency to correct.

The runtime plugin and Composer-based release artifact consistently use version 0.9.4, but package-lock.json still identifies the root npm package as 0.9.3.

Files Needing Attention: package.json, package-lock.json

Important Files Changed

Filename	Overview
composer.json	Advances the Composer project version to 0.9.4, which the release workflow uses for artifact naming.
package.json	Advances the npm package version to 0.9.4 without synchronizing the corresponding root metadata in package-lock.json.
tawkto/readme.txt	Declares WordPress 7.1 compatibility and changes the stable release tag to 0.9.4.
tawkto/tawkto.php	Advances the WordPress plugin header version to 0.9.4.
tawkto/templates/widget.php	Updates informational widget script comments to identify version 0.9.4.

_{Reviews (2): Last reviewed commit: "chore: Bump versions to 0.9.4" | Re-trigger Greptile}

[greptile-apps]

Lockfile Version Remains Stale

package.json now declares version 0.9.4, but package-lock.json still declares the root package as 0.9.3. Tools and consistency checks that inspect the lockfile can therefore report stale release metadata; regenerate or update the lockfile alongside this version bump.