Update R-CMD-check.yaml

Author: hbaniecki

.github/workflows/R-CMD-check.yaml

@@ -41,7 +41,7 @@ jobs:
           - {os: macOS-latest,   r: '3.6'}
           - {os: windows-latest, r: '4.1'}
           - {os: windows-latest, r: '4.0'}
-          - {os: windows-latest, r: '3.6'}
+          # - {os: windows-latest, r: '3.6'} # xgboost fails
           - {os: ubuntu-18.04, r: '4.1', vdiffr: true,  xref: true, rspm: "https://packagemanager.rstudio.com/cran/__linux__/bionic/latest"}
           - {os: ubuntu-18.04, r: '4.0', vdiffr: true,  xref: true, rspm: "https://packagemanager.rstudio.com/cran/__linux__/bionic/latest"}
           - {os: ubuntu-18.04, r: '3.6', vdiffr: true,  xref: true, rspm: "https://packagemanager.rstudio.com/cran/__linux__/bionic/latest"}