MDL-78800 composer: Bump dependencies to current ones

This bumps direct dependencies to current ones:

- phpunit: 9.5.x No updates here, there is the 9.6.x series
  available but a lot of deprecation warnings have been
  introduced there without any alternative to use. See:
  - sebastianbergmann/phpunit#5160
  - sebastianbergmann/phpunit#5062
  - ...
  While that will be handy to prepare ourselves to PHPUnit 10
  in some months... we cannot force everybody to jump to 9.6.x
  because that will make a lot of tests to start emitting
  warnings.
  So we stay with PHPUnit 9.5.x for the life of this branch.
- mink-phpwebdriver: 1.2.1 No updates here, just changed the
  constraint because we cannot advance to 1.3.x yet, there is
  a change there causing some app tests to fail. See:
  - oleg-andreyev/MinkPhpWebDriver#81
  So we stay with 1.2.x until that issue is fixed/clarified,
  only then we'll review the status.
- behat: 3.12.x => 3.13.x

And also, automatically, a bunch of 2nd and deepest dependencies.

Generated with php80 that is the lowest php version supported
by this branch and, also, by some of the dependencies, as per
documented @ https://moodledev.io/general/development/tools/composer

Worth mentioning behat/mink-goutte-driver, that we should move
to mink-browserkit-driver, but that's out from this issue scope.

composer.json

@@ -10,9 +10,9 @@
         "behat/mink": "^1.10.0",
         "friends-of-behat/mink-extension": "^2.7.2",
         "behat/mink-goutte-driver": "^2.0",
-        "symfony/process": "^4.4 || ^5.0",
-        "behat/behat": "3.12.*",
-        "oleg-andreyev/mink-phpwebdriver": "^1.2.1"
+        "symfony/process": "^4.4 || ^5.0 || ^6.0",
+        "behat/behat": "3.13.*",
+        "oleg-andreyev/mink-phpwebdriver": "1.2.*"
     },
     "autoload-dev": {
         "psr-0": {