Make sure this version of cpp11 is installed in test-coverage.yml

Like in the other workflows

Author: DavisVaughan

.github/workflows/test-coverage.yaml

@@ -32,6 +32,7 @@ jobs:
         run: |
           options(warn = 2)
           pak::local_install_dev_deps("cpp11test", dependencies = TRUE)
+          install.packages(".", repos = NULL, type = "source")
           install.packages("cpp11test", repos = NULL, INSTALL_opts = "--install-tests", type = "source")
         shell: Rscript {0}