Get ready for composer 2

.gitignore

-vendor
-composer.lock
+/vendor/
+/.env
+/composer.lock

Dotenv.php

@@ -3,6 +3,7 @@
 namespace LakeDrops\Component\Dotenv;
 
 use Composer\IO\IOInterface;
+use Exception;
 use LakeDrops\Component\Composer\Utils;
 use Symfony\Component\Dotenv\Dotenv as SymfonyDotenv;
 
@@ -205,7 +206,7 @@ final class Dotenv {
       }
       $this->dotenv->load('.env');
     }
-    catch (\Exception $ex) {
+    catch (Exception $ex) {
       // Ignore.
     }
   }

composer.json

@@ -24,13 +24,13 @@
         "source": "https://gitlab.lakedrops.com/composer/library/dotenv/tree/master"
     },
     "require": {
-        "php": ">=7.0",
+        "php": ">=7.2",
         "lakedrops/composer-json-utils": "^1.4.1",
-        "symfony/dotenv": "^3.3"
+        "symfony/dotenv": "^3.4||^4.4||^5.0"
     },
     "require-dev": {
-        "composer/composer": "^1.5.0",
-        "phpunit/phpunit": "^4.8.0"
+        "composer/composer": "^1||^2",
+        "phpunit/phpunit": "^8.4"
     },
     "minimum-stability": "dev",
     "prefer-stable": true,