Bump symfony/yaml from 3.3.0 to 3.3.6

[dependabot-preview]

Bumps symfony/yaml from 3.3.0 to 3.3.6.

Changelog

Sourced from symfony/yaml's changelog.

CHANGELOG

4.0.0

• The behavior of the non-specific tag ! is changed and now forces
  non-evaluating your values.

• complex mappings will throw a ParseException

• support for the comma as a group separator for floats has been dropped, use
  the underscore instead

• support for the !!php/object tag has been dropped, use the !php/object
  tag instead

• duplicate mapping keys throw a ParseException

• non-string mapping keys throw a ParseException, use the Yaml::PARSE_KEYS_AS_STRINGS
  flag to cast them to strings

• % at the beginning of an unquoted string throw a ParseException

• mappings with a colon (:) that is not followed by a whitespace throw a
  ParseException

• the Dumper::setIndentation() method has been removed

• being able to pass boolean options to the Yaml::parse(), Yaml::dump(),
  Parser::parse(), and Dumper::dump() methods to configure the behavior of
  the parser and dumper is no longer supported, pass bitmask flags instead

• the constructor arguments of the Parser class have been removed

• the Inline class is internal and no longer part of the BC promise

• removed support for the !str tag, use the !!str tag instead

• added support for tagged scalars.

  Yaml::parse('!foo bar', Yaml::PARSE_CUSTOM_TAGS);
  // returns TaggedValue('foo', 'bar');

3.4.0

• added support for parsing YAML files using the Yaml::parseFile() or Parser::parseFile() method

• the Dumper, Parser, and Yaml classes are marked as final

• Deprecated the !php/object: tag which will be replaced by the
  !php/object tag (without the colon) in 4.0.

• Deprecated the !php/const: tag which will be replaced by the
  !php/const tag (without the colon) in 4.0.

• Support for the !str tag is deprecated, use the !!str tag instead.

• Deprecated using the non-specific tag ! as its behavior will change in 4.0.
  It will force non-evaluating your values in 4.0. Use plain integers or !!float instead.

... (truncated)

Commits

• ddc2332 Suggest using quotes instead of Yaml::PARSE_KEYS_AS_STRINGS
• 1f93a8d [Yaml] Fix typo: PARSE_KEYS_AS_STRING -> PARSE_KEYS_AS_STRINGS
• 9b8c71a [Yaml] Fix linting yaml with constants as keys
• e3d5c65 [Yaml] Remove line number in deprecation notices
• 9752a30 minor #23031 [Yaml] Clarify "incompatible key casting" deprecation message (r...
• bc6329b [Yaml] Clarify "incompatible key casting" deprecation message
• a5ecefd Merge branch '3.2' into 3.3
• 78a0c5d Merge branch '2.8' into 3.2
• 4c29dec Merge branch '2.7' into 2.8
• dee17ff Using FQ name for PHP_VERSION_ID
• See full diff in compare view

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