Update secret names

Author: bthomee

.github/workflows/export.yml

@@ -32,7 +32,7 @@ jobs:
           echo "Added new conan remote '${{ env.CONAN_REMOTE_NAME }}' at ${{ env.CONAN_REMOTE_URL }}."
       - name: Log into Conan remote
         run: |
-          conan remote login ${{ env.CONAN_REMOTE_NAME }} ${{ secrets.CONAN_USERNAME }} --password "${{ secrets.CONAN_PASSWORD }}"
+          conan remote login ${{ env.CONAN_REMOTE_NAME }} ${{ secrets.CONAN_REMOTE_USERNAME }} --password "${{ secrets.CONAN_REMOTE_PASSWORD }}"
           conan remote list-users
       - name: Export the recipes
         working-directory: recipes