change lifecycle badge to stable

Author: hadrilec2

.Rbuildignore

@@ -8,3 +8,4 @@
 ^pkg_tools.R$
 ^cran-comments.md$
 ^README.Rmd$
+^CRAN-RELEASE$

README.Rmd

@@ -17,7 +17,7 @@ knitr::opts_chunk$set(
 <!-- [![CRAN status](https://www.r-pkg.org/badges/version/insee)](https://cran.r-project.org/package=insee) -->
 <!-- [![CRAN checks](https://cranchecks.info/badges/worst/insee)](https://cran.r-project.org/web/checks/check_results_insee.html) -->
 <!-- [![Codecov test coverage](https://codecov.io/gh/InseeFr/R-Insee-Data/branch/master/graph/badge.svg)](https://codecov.io/gh/InseeFr/R-Insee-Data?branch=master) -->
-<!-- [![lifecycle](https://img.shields.io/badge/lifecycle-maturing-blue.svg)](https://www.tidyverse.org/lifecycle/#maturing) -->
+<!-- [![lifecycle](https://img.shields.io/badge/lifecycle-stable-green.svg)](https://lifecycle.r-lib.org/articles/stages.html) -->
 <!-- [![Downloads](https://cranlogs.r-pkg.org/badges/grand-total/insee)](https://cran.r-project.org/package=insee) -->
 <!-- [![Downloads](https://cranlogs.r-pkg.org/badges/insee)](https://cran.r-project.org/package=insee) -->
 <!-- [![Project Status: Active – The project has reached a stable, usable state and is being actively developed.](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/) -->

README.md

@@ -6,7 +6,7 @@ insee R package
  [![CRAN status](https://www.r-pkg.org/badges/version/insee)](https://cran.r-project.org/package=insee) 
  [![CRAN checks](https://cranchecks.info/badges/worst/insee)](https://cran.r-project.org/web/checks/check_results_insee.html) 
  [![Codecov test coverage](https://codecov.io/gh/InseeFr/R-Insee-Data/branch/master/graph/badge.svg)](https://codecov.io/gh/InseeFr/R-Insee-Data?branch=master) 
- [![lifecycle](https://img.shields.io/badge/lifecycle-maturing-blue.svg)](https://www.tidyverse.org/lifecycle/#maturing) 
+ [![lifecycle](https://img.shields.io/badge/lifecycle-stable-green.svg)](https://lifecycle.r-lib.org/articles/stages.html) 
  [![Downloads](https://cranlogs.r-pkg.org/badges/grand-total/insee)](https://cran.r-project.org/package=insee) 
  [![Downloads](https://cranlogs.r-pkg.org/badges/insee)](https://cran.r-project.org/package=insee) 
  [![Project Status: Active – The project has reached a stable, usable state and is being actively developed.](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/)