Issue #3217322 by effulgentsia, xjm, Gábor Hojtsy: Update dependencies except PHPUnit to latest releases as of June 3, 2021

Issue #3213295 by effulgentsia, tedbow, longwave, Spokje, xjm, catch: Update Symfony 5 components to 5.3-rc1

Issue #3211805 by xjm, Kristen Pol, longwave: Update composer/composer dev dependency in metapackages to 2.0.13

Issue #3209459 by longwave, catch, andypost: Switch to friends of behat MinkBrowserKitDriver for PHP 8 and Symfony 5 compatibility

Issue #3096781 by longwave, xjm, catch, Eric_A, mikelutz: symfony/mime and symfony/var-dumper versions are on 5.1.7 (not an LTS) and therefore have gaps in security coverage relative to Drupal minors

Issue #3128631 by andypost, longwave, hussainweb, ayushmishra206, greg.1.anderson, xjm, catch, Mixologic, jungle, Gábor Hojtsy: Update dependencies composer/composer ^2 and composer/semver to ^3

Issue #3110972 by sanduhrs, jungle, raman.b, samiullah, alexpott, andypost, catch, xjm: Update easyrdf library to 1.0.0

Issue #3162403 by alexpott, mondrake: Upgrade symfony/phpunit-bridge to 5.1.6 to fix badly formed deprecation error message

Issue #3157434 by alexpott, jungle, dww, mondrake: Deprecate \Drupal\Tests\Traits\ExpectDeprecationTrait in favour of \Symfony\Bridge\PhpUnit\ExpectDeprecationTrait

Issue #3156998 by alexpott, mondrake, jibran: Using @requires extension_name in PHPUnit unit tests fails if extension is not present

Issue #3078671 by alexpott, Simon Peacock, greg.1.anderson, vuil, jungle, rodrigoaguilera, sam-elayyoub, mmjvb, karolrybak, catch: Pin behat/mink and behat/mink-selenium2-driver to use resolvable release

Issue #3078671 by Simon Peacock, greg.1.anderson, vuil, alexpott, jungle, rodrigoaguilera, sam-elayyoub, mmjvb, karolrybak: Pin behat/mink and behat/mink-selenium2-driver to use resolvable release

Issue #3063887 by mondrake, alexpott, longwave, catch, xjm: Support PHPUnit 8 in Drupal 9, drop support for PHPUnit 7