[FEATURE] ♻️ !! Switch to main as default branch

Use `main` instead of `master` as default branch
from now on.

Author: pixelbrackets

src/RoboFile.php

@@ -33,7 +33,7 @@ public function patch(array $options = [
         'working-directory|d' => null,
         'patch-source-directory|s' => null,
         'patch-name|p' => 'template',
-        'source-branch' => 'master', // rename to main in next mayor release
+        'source-branch' => 'main',
         'branch-name' => null,
         'halt-before-commit' => false,
     ]): int

tests/unit/PatchbotCommandsTest.php

@@ -30,11 +30,11 @@ public static function loadFixtures(): void
             exec('git clone ' . self::$bareRepository . ' ' . $tmpDirectory . ' 2> /dev/null');
             chdir($tmpDirectory);
             exec('git config --global user.email "[email protected]" && git config --global user.name "Patchbot"');
-            exec('git checkout --orphan master 2> /dev/null');
+            exec('git checkout --orphan main 2> /dev/null');
             file_put_contents($tmpDirectory . 'README.md', '# ACME Project' . PHP_EOL . 'Hello World' . PHP_EOL . PHP_EOL);
             exec('git add -A');
             exec('git commit -a -m "Add README"');
-            exec('git push origin master 2> /dev/null');
+            exec('git push origin main 2> /dev/null');
         }
     }