date: fix subfmt-up1, fill-1, pct-pct, and invalid-high-bit-set tests

Author: sylvestre

Cargo.lock

@@ -40,6 +40,7 @@ jiff = { workspace = true, features = [
   "tzdb-concatenated",
 ] }
 parse_datetime = { workspace = true }
+regex = { workspace = true }
 uucore = { workspace = true, features = ["parser", "i18n-datetime"] }
 
 [target.'cfg(unix)'.dependencies]