Indulge the tool by quoting this path

The tool will find the `"$(workspaces.source.path)/source"` (quoted) in
the base non-TA Task, and will replace the `$(workspaces.source.path)`
with `/var/workdir`, so the resulting value will be the value from this
commit. This is analogous to what Tekton Pipelines does for the variable
substitution.
Added so that the base-TA Task can be easily compared to the tool
generated TA Task.

task/prefetch-dependencies-oci-ta/0.1/prefetch-dependencies-oci-ta.yaml

@@ -100,7 +100,7 @@ spec:
           cp "${WORKSPACE_GIT_AUTH_PATH}/.gitconfig" "${HOME}/.gitconfig"
         # Compatibility with kubernetes.io/basic-auth secrets
         elif [ -f "${WORKSPACE_GIT_AUTH_PATH}/username" ] && [ -f "${WORKSPACE_GIT_AUTH_PATH}/password" ]; then
-          HOSTNAME=$(cd /var/workdir/source && git remote get-url origin | awk -F/ '{print $3}')
+          HOSTNAME=$(cd "/var/workdir/source" && git remote get-url origin | awk -F/ '{print $3}')
           echo "https://$(cat ${WORKSPACE_GIT_AUTH_PATH}/username):$(cat ${WORKSPACE_GIT_AUTH_PATH}/password)@$HOSTNAME" > "${HOME}/.git-credentials"
           echo -e "[credential \"https://$HOSTNAME\"]\n  helper = store" > "${HOME}/.gitconfig"
         else