Bump laravel/framework from 4.1.28 to 6.20.26

Bumps [laravel/framework](https://github.com/laravel/framework) from 4.1.28 to 6.20.26.
- [Release notes](https://github.com/laravel/framework/releases)
- [Changelog](https://github.com/laravel/framework/blob/8.x/CHANGELOG-8.x.md)
- [Commits](laravel/framework@v4.1.28...v6.20.26)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

composer.json

@@ -4,7 +4,7 @@
 	"keywords": ["framework", "laravel"],
 	"license": "MIT",
 	"require": {
-		"laravel/framework": "4.1.*"
+		"laravel/framework": "6.20.*"
 	},
 	"autoload": {
 		"classmap": [