Add Coveralls repo key to environment

Author: neil-lindquist

.github/workflows/ci.yml

@@ -33,7 +33,9 @@ jobs:
       - name: Configure Coverage
         # Only gather code coverage on Linux-SBCL
         if: matrix.os == 'ubuntu-latest' && matrix.lisp == 'sbcl-bin'
-        run: echo "COVERALLS=true" >> $GITHUB_ENV
+        run: |
+          echo "COVERALLS=true" >> $GITHUB_ENV
+          echo "COVERALLS_REPO_TOKEN=${{ secrets.COVERALLS_REPO_TOKEN }}" >> $GITHUB_ENV
 
       # These steps run our tests
       # Windows needs to be run with the msys2 shell due to how roswell is installed