Correct the verion of gcc used in the CI pipeline

Author: php1ic

README.md

@@ -14,7 +14,7 @@
 
 | OS             | Config                                       |                                                                                                                                                                            Build Status | Compiler Version |
 |----------------|----------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------:|-----------------:|
-| Linux          | [linux.yml](.github/workflows/linux.yml)     |       [![Linux Builds](https://github.com/php1ic/nuclear-data-reader/actions/workflows/linux.yml/badge.svg)](https://github.com/php1ic/nuclear-data-reader/actions/workflows/linux.yml) |   gcc11, clang14 |
+| Linux          | [linux.yml](.github/workflows/linux.yml)     |       [![Linux Builds](https://github.com/php1ic/nuclear-data-reader/actions/workflows/linux.yml/badge.svg)](https://github.com/php1ic/nuclear-data-reader/actions/workflows/linux.yml) |   gcc11, clang15 |
 | Windows (MSVC) | [windows.yml](.github/workflows/windows.yml) | [![Windows Builds](https://github.com/php1ic/nuclear-data-reader/actions/workflows/windows.yml/badge.svg)](https://github.com/php1ic/nuclear-data-reader/actions/workflows/windows.yml) |        MSVC-2022 |
 
 ## Introduction