fixup! Add options for the Julia binary and project path

Author: JamesWrigley

.github/workflows/tests.yml

@@ -102,7 +102,7 @@ jobs:
         if: ${{ matrix.jlinstaller == 'manual' }}
         run: |
           mkdir ${{ env.MANUAL_TEST_PROJECT }}
-          julia --project=${{ env.MANUAL_TEST_PROJECT }} -e 'import Pkg; Pkg.dev(path="."); Pkg.instantiate()'
+          julia --project=${{ env.MANUAL_TEST_PROJECT }} -e 'import Pkg; Pkg.develop(path="."); Pkg.instantiate()'
 
       - name: Install dependencies
         run: |