update changelog

CHANGELOG.md

@@ -1,5 +1,22 @@
 # Changelog
 
+# 4.8.0 - 2021-05-19
+- [3034: Fix phpunit dependency version](https://github.com/slimphp/Slim/pull/3034) thanks to @l0gicgate
+- [3037: Replace Travis by GitHub Actions](https://github.com/slimphp/Slim/pull/3037) thanks to @t0mmy742
+- [3043: Cover App creation from AppFactory with empty Container](https://github.com/slimphp/Slim/pull/3043) thanks to @t0mmy742
+- [3045: Update phpstan/phpstan requirement from ^0.12.58 to ^0.12.64](https://github.com/slimphp/Slim/pull/3045) thanks to @dependabot-preview[bot]
+- [3047: documentation: min php 7.2 required](https://github.com/slimphp/Slim/pull/3047) thanks to @Rotzbua
+- [3054: Update phpstan/phpstan requirement from ^0.12.64 to ^0.12.70](https://github.com/slimphp/Slim/pull/3054) thanks to @dependabot-preview[bot]
+- [3056: Fix docblock in ErrorMiddleware](https://github.com/slimphp/Slim/pull/3056) thanks to @piotr-cz
+- [3060: Update phpstan/phpstan requirement from ^0.12.70 to ^0.12.80](https://github.com/slimphp/Slim/pull/3060) thanks to @dependabot-preview[bot]
+- [3061: Update nyholm/psr7 requirement from ^1.3 to ^1.4](https://github.com/slimphp/Slim/pull/3061) thanks to @dependabot-preview[bot]
+- [3063: Allow ^1.0 || ^2.0 in psr/container](https://github.com/slimphp/Slim/pull/3063) thanks to @Ayesh
+- [3069: Classname/Method Callable Arrays](https://github.com/slimphp/Slim/pull/3069) thanks to @ddrv
+- [3078: Update squizlabs/php_codesniffer requirement from ^3.5 to ^3.6](https://github.com/slimphp/Slim/pull/3078) thanks to @dependabot[bot]
+- [3079: Update phpspec/prophecy requirement from ^1.12 to ^1.13](https://github.com/slimphp/Slim/pull/3079) thanks to @dependabot[bot]
+- [3080: Update guzzlehttp/psr7 requirement from ^1.7 to ^1.8](https://github.com/slimphp/Slim/pull/3080) thanks to @dependabot[bot]
+- [3082: Update phpstan/phpstan requirement from ^0.12.80 to ^0.12.85](https://github.com/slimphp/Slim/pull/3082) thanks to @dependabot[bot]
+
 # 4.7.0 - 2020-11-30
 
 ### Fixed