update badges

Author: t-bltg

README.md

@@ -3,9 +3,8 @@
 A Julia package for reading/writing Fortran unformatted (i.e. binary) files.
 
 [![Documentation](https://img.shields.io/badge/docs-stable-blue.svg)](https://juliadata.org/FortranFiles.jl/stable/)
-[![Build Status](https://travis-ci.org/JuliaData/FortranFiles.jl.svg?branch=master)](https://travis-ci.org/JuliaData/FortranFiles.jl)
-[![coveralls Status](https://coveralls.io/repos/JuliaData/FortranFiles.jl/badge.svg?branch=master&service=github)](https://coveralls.io/github/JuliaData/FortranFiles.jl?branch=master)
-[![codecov.io Status](http://codecov.io/github/JuliaData/FortranFiles.jl/coverage.svg?branch=master)](https://codecov.io/gh/JuliaData/FortranFiles.jl/branch/master)
+[![Coverage Status](https://codecov.io/gh/JuliaData/FortranFiles.jl/branch/master/graphs/badge.svg?branch=master)](https://app.codecov.io/gh/JuliaData/FortranFiles.jl)
+[![CI](https://github.com/JuliaData/FortranFiles.jl/actions/workflows/ci.yml/badge.svg)](https://github.com/JuliaData/FortranFiles.jl/actions/workflows/ci.yml)
 
 Julia >= 1.0 is required.