Tests: test a function deprecated before 8.4

So that the tests that run on 8.3 pass

Author: DanielEScherzer

src/Tests/data/ExtraSniffsApplied.php

@@ -2,7 +2,7 @@
 declare( strict_types = 1 );
 
 function usesDeprecated() {
-	lcg_value();
+	utf8_encode( "foo" );
 }
 
 #[FirstAttrib, SecondAttrib]

src/Tests/data/ExtraSniffsApplied.php.fixed

@@ -2,7 +2,7 @@
 declare( strict_types = 1 );
 
 function usesDeprecated() {
-	lcg_value();
+	utf8_encode( "foo" );
 }
 
 #[FirstAttrib]

src/Tests/data/ExtraSniffsApplied.report

@@ -2,7 +2,7 @@ FILE: {dir}/data/ExtraSniffsApplied.php
 --------------------------------------------------------------------------------
 FOUND 2 ERRORS AFFECTING 2 LINES
 --------------------------------------------------------------------------------
- 5 | ERROR | [ ] Function lcg_value() has been deprecated
+ 5 | ERROR | [ ] Function utf8_encode() has been deprecated
    |       |     (Generic.PHP.DeprecatedFunctions.Deprecated)
  8 | ERROR | [x] 2 attributes are joined.
    |       |     (SlevomatCodingStandard.Attributes.DisallowAttributesJoining.DisallowedAttributesJoining)