Update symfony/var-dumper requirement from ^8.0.6 to ^8.0.8

[dependabot]

Updates the requirements on symfony/var-dumper to permit the latest version.

Release notes

Sourced from symfony/var-dumper's releases.

v8.0.8

Changelog (symfony/var-dumper@v8.0.7...v8.0.8)

• bug #63648 Wrong dumper output for Accept: aplication/json requests (@​rfcdt)

Changelog

Sourced from symfony/var-dumper's changelog.

CHANGELOG

7.4

• Add support for adding more default casters to AbstractCloner::addDefaultCasters()
• Select HtmlDumper only if Accept header contains "html"

7.3

• Add casters for Dba\Connection, SQLite3Result, OpenSSLAsymmetricKey and OpenSSLCertificateSigningRequest
• Deprecate ResourceCaster::castCurl(), ResourceCaster::castGd() and ResourceCaster::castOpensslX509()
• Mark all casters as @internal

7.2

• Add support for FORCE_COLOR environment variable
• Add support for virtual properties

7.1

• Add support for new DOM extension classes in DOMCaster

7.0

• Add argument $label to VarDumper::dump()
• Require explicit argument when calling VarDumper::setHandler()
• Remove display of backtrace in Twig_Template, only Twig\Template is supported

6.4

• Dump uninitialized properties

6.3

• Add caster for WeakMap
• Add support of named arguments to dd() and dump() to display the argument name
• Add support for Relay\Relay
• Add display of invisible characters

6.2

... (truncated)

Commits

• cfb7bad Merge branch '7.4' into 8.0
• c4448ce Merge branch '7.4' into 8.0
• 9510c39 [VarDumper] Ensure that tests are resilient when the Xdebug file link format ...
• cf36b72 Configure deprecation triggers
• 9584e45 Merge branch '7.4' into 8.0
• a98c17e [VarDumper] Wrong dumper output for Accept: aplication/json requests
• See full diff in compare view

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