Merge branch '7.3' into 7.4

* 7.3:
  [Validator] Skip tests using unavailable timezone on the local host
  [Yaml] Fix scope resolution operator in flow mapping keys

Author: xabbuh

src/Symfony/Component/Validator/Tests/Constraints/TimezoneValidatorTest.php

@@ -258,6 +258,11 @@ public function testGroupedTimezonesWithInvalidCountry()
     #[DataProvider('getDeprecatedTimezones')]
     public function testDeprecatedTimezonesAreValidWithBC(string $timezone)
     {
+        // Skip test if the timezone is not available in the current timezone database
+        if (!\in_array($timezone, \DateTimeZone::listIdentifiers(\DateTimeZone::ALL_WITH_BC), true)) {
+            $this->markTestSkipped(sprintf('Timezone "%s" is not available in the current timezone database', $timezone));
+        }
+
         $constraint = new Timezone(\DateTimeZone::ALL_WITH_BC);
 
         $this->validator->validate($timezone, $constraint);

src/Symfony/Component/Yaml/Inline.php

@@ -459,7 +459,7 @@ private static function parseMapping(string $mapping, int $flags, int &$i = 0, a
             }
 
             if ('!php/const' === $key || '!php/enum' === $key) {
-                $key .= ' '.self::parseScalar($mapping, $flags, [':'], $i, false);
+                $key .= ' '.self::parseScalar($mapping, $flags, ['(?<!:):(?!:)'], $i, false);
                 $key = self::evaluateScalar($key, $flags);
             }
 

src/Symfony/Component/Yaml/Tests/InlineTest.php

@@ -58,6 +58,7 @@ public static function getTestsForParsePhpConstants()
             ['{ foo: !php/const PHP_INT_MAX }', ['foo' => \PHP_INT_MAX]],
             ['{ !php/const PHP_INT_MAX: foo }', [\PHP_INT_MAX => 'foo']],
             ['!php/const NULL', null],
+            ['{ !php/const Symfony\Component\Yaml\Yaml::PARSE_CONSTANT: foo }', [Yaml::PARSE_CONSTANT => 'foo']],
         ];
     }