ci: bumpversion updates date

.bumpversion.toml

@@ -11,6 +11,13 @@ filename = "CITATION.cff"
 search = 'version: "{current_version}"'
 replace = 'version: "{new_version}"'
 
+[[tool.bumpversion.files]]
+# note that the it's not possible to do 2 search/replace actions to the same file in a single entry
+filename = "CITATION.cff"
+search = "__date__ = '\\d{{4}}-\\d{{2}}-\\d{{2}}'"
+replace = "__date__ = '{now:%Y-%m-%d}'"
+regex = true
+
 [[tool.bumpversion.files]]
 filename = "deeprank2/__init__.py"
 search = '__version__ = "{current_version}"'