Draft: Update paraconf & FindYaml

Short description of the MR

Fix an issue where libYaml would not be found correctly when installed in a non-standard directory

List of things to check before making a MR

Before merging your code, please check the following:

• you have checked pdi/docs/CheckList.md
• you have correctly updated the copyright headers:
  • your institution is in the copyright header of every file you (substantially) modified;
  • you have checked that the end-year of the copyright there is the current one;
• you have updated the AUTHORS file:
  • you have added yourself to the AUTHORS file;
  • if this is a new contribution, you have added it to the AUTHORS file;
• you have correctly linked your MR to one or more issues:
  • your MR solves an identified issue;
  • your commit contain the Fix #issue keyword to autoclose the issue when merged;