minor #43379 Add the missing greek translations for security core and validator component (AchillesKal)

This PR was merged into the 4.4 branch.

Discussion
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Add the missing greek translations for security core and validator component

| Q             | A
| ------------- | ---
| Branch?       |  4.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | #43321
| License       | MIT

Commits
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8e5e997fa1 Add the missing greek translations for security core and validator component

Author: fabpot

Resources/translations/validators.el.xlf

@@ -386,6 +386,10 @@
                 <source>This value is not a valid International Securities Identification Number (ISIN).</source>
                 <target>Αυτή η τιμή δεν είναι έγκυρο International Securities Identification Number (ISIN).</target>
             </trans-unit>
+            <trans-unit id="100">
+                <source>This value should be a valid expression.</source>
+                <target>Αυτή η τιμή πρέπει να είναι έγκυρη έκφραση.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>