pre-commit: Switch to our fork of cffvalidate hook

Author: alexdewar

.pre-commit-config.yaml

@@ -70,7 +70,7 @@ repos:
       - id: codespell
         args: [--ignore-words, .codespell_ignore.txt]
         exclude: \.svg$
-  - repo: https://github.com/citation-file-format/cffconvert
-    rev: b6045d78aac9e02b039703b030588d54d53262ac
+  - repo: https://github.com/EnergySystemsModellingLab/cffconvert
+    rev: 2.1.0
     hooks:
       - id: validate-cff