minor #19534 Add czech translation for Url and Length validator (pulzarraider)

This PR was merged into the 2.7 branch.

Discussion
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Add czech translation for Url and Length validator

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Commits
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bfd1644 Add czech translation for Url and Length validator

Author: fabpot

Resources/translations/validators.cs.xlf

@@ -303,8 +303,12 @@
                 <target>Soubor nesmí být prázdný.</target>
             </trans-unit>
             <trans-unit id="79">
+                <source>The host could not be resolved.</source>
+                <target>Hostitele nebylo možné rozpoznat.</target>
+            </trans-unit>
+            <trans-unit id="80">
                 <source>This value does not match the expected {{ charset }} charset.</source>
-                <target>Tato hodnota neodpovídá očekávanému kódování {{ charset }}.</target>
+                <target>Tato hodnota neodpovídá očekávané znakové sadě {{ charset }}.</target>
             </trans-unit>
         </body>
     </file>