Add quotes around the date (#13)

Co-authored-by: Neil Enns <{ID}+{username}@users.noreply.github.com>

.github/workflows/release.yml

@@ -115,7 +115,7 @@ jobs:
         with:
           include: ".*.kicad_pcb"
           find: "%%date%%"
-          replace: ${{ steps.date.outputs.date }}
+          replace: '"${{ steps.date.outputs.date }}"'
 
       # Actually run KiBot to generate all the files. The KiBot script used is
       # in the .kibot/release.kibot.yaml folder.