Work around 'dirty' working directory in deploy script

- GitHub Actions likely don't allow activity outside working directory
- conan create doesn't (by default) allow scm to do its thing if there are
  changes in the working directory

Author: johnmcfarlane

.github/deploy

@@ -65,5 +65,8 @@ popd
 conan remote add johnmcfarlane/cnl https://api.bintray.com/conan/johnmcfarlane/cnl
 conan user -p "${CONAN_PASS}" -r johnmcfarlane/cnl "${CONAN_USER}"
 conan install --build=missing "${PROJECT_DIR}"
-conan create "${PROJECT_DIR}" "cnl/${CNL_VERSION}@johnmcfarlane/${CNL_CHANNEL}"
+conan create \
+  --ignore-dirty \
+  "${PROJECT_DIR}" \
+  "cnl/${CNL_VERSION}@johnmcfarlane/${CNL_CHANNEL}"
 conan upload "cnl/${CNL_VERSION}@johnmcfarlane/${CNL_CHANNEL}" -r johnmcfarlane/cnl