🌐 Sync Translations + Update README Progress Table (#3639)

### Description of Changes

This Pull Request was automatically generated to synchronize updates to
translation files 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.

#### **Why these changes are necessary**
- Keeps translation files aligned with the latest reference updates.
- Ensures the documentation reflects the current translation progress.

---

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_el_GR.properties

@@ -807,6 +807,28 @@ getPdfInfo.title=Λήψη πληροφοριών PDF
 getPdfInfo.header=Λήψη πληροφοριών PDF
 getPdfInfo.submit=Λήψη πληροφοριών
 getPdfInfo.downloadJson=Λήψη JSON
+getPdfInfo.summary=PDF Summary
+getPdfInfo.summary.encrypted=This PDF is encrypted so may face issues with some applications
+getPdfInfo.summary.permissions=This PDF has {0} restricted permissions which may limit what you can do with it
+getPdfInfo.summary.compliance=This PDF complies with the {0} standard
+getPdfInfo.summary.basicInfo=Basic Information
+getPdfInfo.summary.docInfo=Document Information
+getPdfInfo.summary.encrypted.alert=Encrypted PDF - This document is password protected
+getPdfInfo.summary.not.encrypted.alert=Unencrypted PDF - No password protection
+getPdfInfo.summary.permissions.alert=Restricted Permissions - {0} actions are not allowed
+getPdfInfo.summary.all.permissions.alert=All Permissions Allowed
+getPdfInfo.summary.compliance.alert={0} Compliant
+getPdfInfo.summary.no.compliance.alert=No Compliance Standards
+getPdfInfo.summary.security.section=Security Status
+getPdfInfo.section.BasicInfo=Basic Information about the PDF document including file size, page count, and language
+getPdfInfo.section.Metadata=Document metadata including title, author, creation date and other document properties
+getPdfInfo.section.DocumentInfo=Technical details about the PDF document structure and version
+getPdfInfo.section.Compliancy=PDF standards compliance information (PDF/A, PDF/X, etc.)
+getPdfInfo.section.Encryption=Security and encryption details of the document
+getPdfInfo.section.Permissions=Document permission settings that control what actions can be performed
+getPdfInfo.section.Other=Additional document components like bookmarks, layers, and embedded files
+getPdfInfo.section.FormFields=Interactive form fields present in the document
+getPdfInfo.section.PerPageInfo=Detailed information about each page in the document
 
 
 #markdown-to-pdf