Update to git 2.42.0

.gitlab-ci.yml

 variables:
-  GIT_VERSION: "2.41.0"
+  GIT_VERSION: "2.42.0"
   PYTHON_VERSION: "3.10.8"
   DEFAULT_HELP_FORMAT: "man"
 

README.md

 # Git
 
-Pipeline to build Git 2.41.0 with conan on our legacy CentOS 6.
+Pipeline to build Git 2.42.0 with conan on our legacy CentOS 6.
 
-Git 2.41.0 for:
-* Linux 64 bits: [git-2.41.0-linux-x86_64.zip](https://gitlab.synchrotron-soleil.fr/software-control-system/devtools/git/-/jobs/artifacts/2.41.0/download?job=linux-x86_64)
-* Linux 32 bits: [git-2.41.0-linux-i686.zip](https://gitlab.synchrotron-soleil.fr/software-control-system/devtools/git/-/jobs/artifacts/2.41.0/download?job=linux-i686)
+Git 2.42.0 for:
+* Linux 64 bits: [git-2.42.0-linux-x86_64.zip](https://gitlab.synchrotron-soleil.fr/software-control-system/devtools/git/-/jobs/artifacts/2.42.0/download?job=linux-x86_64)
+* Linux 32 bits: [git-2.42.0-linux-i686.zip](https://gitlab.synchrotron-soleil.fr/software-control-system/devtools/git/-/jobs/artifacts/2.42.0/download?job=linux-i686)