Fix tests

Increase count for rules for CLANGTIDY, CPPCHECK and GCC to account
for new "unknown" rule
Increase count of possible properties to account for
sonar.cxx.unknown.rule.id

cxx-sensors/src/test/java/org/sonar/cxx/sensors/clangtidy/CxxClangTidyRuleRepositoryTest.java

@@ -36,7 +36,7 @@ void createRulesTest() {
     def.define(context);
 
     RulesDefinition.Repository repo = context.repository(CxxClangTidyRuleRepository.KEY);
-    assertThat(repo.rules()).hasSize(1355);
+    assertThat(repo.rules()).hasSize(1356);
   }
 
 }

cxx-sensors/src/test/java/org/sonar/cxx/sensors/compiler/gcc/CxxCompilerGccRuleRepositoryTest.java

@@ -38,7 +38,7 @@ void createGccRulesTest() {
     def.define(context);
 
     RulesDefinition.Repository repo = context.repository(CxxCompilerGccRuleRepository.KEY);
-    assertThat(repo.rules()).hasSize(230);
+    assertThat(repo.rules()).hasSize(231);
   }
 
 }

cxx-sensors/src/test/java/org/sonar/cxx/sensors/cppcheck/CxxCppCheckRuleRepositoryTest.java

@@ -37,7 +37,7 @@ void createRulesTest() {
     def.define(context);
 
     RulesDefinition.Repository repo = context.repository(CxxCppCheckRuleRepository.KEY);
-    assertThat(repo.rules()).hasSize(674);
+    assertThat(repo.rules()).hasSize(675);
   }
 
 }

sonar-cxx-plugin/src/test/java/org/sonar/plugins/cxx/CxxPluginTest.java

@@ -40,7 +40,7 @@ void testGetExtensions() throws Exception {
     var context = new Plugin.Context(runtime);
     var plugin = new CxxPlugin();
     plugin.define(context);
-    assertThat(context.getExtensions()).hasSize(83);
+    assertThat(context.getExtensions()).hasSize(84);
   }
 
 }