revert changes to gha workflow and install specific knitr version

.github/workflows/check-bioc.yml

@@ -148,7 +148,7 @@ jobs:
       - name: Install Windows system dependencies
         if: runner.os == 'Windows'
         run: |
-          install.packages("highr")
+          remotes::install_version("knitr", version = "1.46")
           ## Edit below if you have any Windows system dependencies
         shell: Rscript {0}
 
@@ -158,9 +158,7 @@ jobs:
       - name: Install tinytex packages
         run: |
           system("tlmgr --version")
-          # install.packages("tinytex")
-          # install specific version of tinytex to avoid breaking changes from newest version
-          remotes::install_version("tinytex", version = "0.50")
+          install.packages("tinytex")
           tinytex::tlmgr_install(pkgs = c("bera", "caption", "changepage", "enumitem", "everysel", "fancyhdr", "footmisc", "grfext", "index", "marginfix", "mathtools", 
                                  "ms", "nowidow", "parnotes", "parskip", "placeins", "preprint", "ragged2e", "side", "soul", "titlesec", "tocbibind", "xstring"))
         shell: Rscript {0}