[BC] Upgraded dependencies, dropped support for anything below PHP 8.0. (#849)

* GitHub actions + style fixes + updated packages

* Fixed workflows dir

* Support for PHP 8.1 (#1)

* Update README.md

* Revert some changes from upstream

ORIGINAL_ALCHEMY_CHANGELOG.md

@@ -0,0 +1,64 @@
+CHANGELOG
+---------
+* 1.6.0 (2015-03-02)
+  * BC Break: bump minimum PHP versions 
+  * Allow use of evenement v2.0 (thanks @patkar for the P/R)
+
+* 1.5.0 (2013-06-21)
+
+  * BC Break : ConfigurationInterface::get does not throw exceptions anymore
+    in case the key does not exist. Second argument is a default value to return
+    in case the key does not exist.
+
+* 1.4.1 (2013-05-23)
+
+  * Add third parameter to BinaryInterface::command method to pass a listener or
+    an array of listener that will be registered just the time of the command.
+
+* 1.4.0 (2013-05-11)
+
+  * Extract process run management to ProcessRunner.
+  * Add support for process listeners.
+  * Provides bundled DebugListener.
+  * Add BinaryInterface::command method.
+  * BC break : ProcessRunnerInterface::run now takes an SplObjectStorage containing
+    listeners as second argument.
+  * BC break : BinaryInterface no longer implements LoggerAwareInterface
+    as it is now supported by ProcessRunner.
+
+* 1.3.4 (2013-04-26)
+
+  * Add BinaryDriver::run method.
+
+* 1.3.3 (2013-04-26)
+
+  * Add BinaryDriver::createProcessMock method.
+
+* 1.3.2 (2013-04-26)
+
+  * Add BinaryDriverTestCase for testing BinaryDriver implementations.
+
+* 1.3.1 (2013-04-24)
+
+  * Add timeouts handling
+
+* 1.3.0 (2013-04-24)
+
+  * Add BinaryInterface and AbstractBinary
+
+* 1.2.1 (2013-04-24)
+
+  * Add ConfigurationAwareInterface
+  * Add ProcessBuilderAwareInterface
+
+* 1.2.0 (2013-04-24)
+
+  * Add BinaryDriver\Configuration
+
+* 1.1.0 (2013-04-24)
+
+  * Add support for timeouts via `setTimeout` method
+
+* 1.0.0 (2013-04-23)
+
+  * First stable version.