🌐 Sync Translations + Update README Progress Table + Update Verification Metadata (#2860)

### Description of Changes

This Pull Request was automatically generated to synchronize updates to
translation files, verification metadata, and documentation. Below are
the details of the changes made:

#### **1. Synchronization of Translation Files**
- Updated translation files (`messages_*.properties`) to reflect changes
in the reference file `messages_en_GB.properties`.
- Ensured consistency and synchronization across all supported language
files.
- Highlighted any missing or incomplete translations.

#### **2. Update README.md**
- Generated the translation progress table in `README.md`.
- Added a summary of the current translation status for all supported
languages.
- Included up-to-date statistics on translation coverage.

#### **3. Verification Metadata Updates**
- Generated or refreshed the `verification-keyring.keys` and
`verification-metadata.xml` files.
- Included the latest dependency signatures and checksums to enhance the
build's integrity.

#### **Why these changes are necessary**
- Keeps translation files aligned with the latest reference updates.
- Ensures the documentation reflects the current translation progress.
- Strengthens dependency verification for a more secure build process.

---

Auto-generated by [create-pull-request][1].

[1]: https://github.com/peter-evans/create-pull-request

---------

Co-authored-by: stirlingbot[bot] <195170888+stirlingbot[bot]@users.noreply.github.com>

src/main/resources/messages_en_US.properties

@@ -273,6 +273,7 @@ home.legacyHomepage=Old homepage
 home.newHomePage=Try our new homepage!
 home.alphabetical=Alphabetical
 home.globalPopularity=Global Popularity
+home.sortBy=Sort by:
 
 home.multiTool.title=PDF Multi Tool
 home.multiTool.desc=Merge, Rotate, Rearrange, Split, and Remove pages