Migrate from std/nre -> nitely/regex

std/nre depends on PCRE v1 which is being deprecated by a number of
major distributions (Debian specifically). The core Nim team does not
have a plan currently to migrate it to PCRE v2. nitely/regex is a
Nim-native PCRE-compatible replacement.

AI-Assisted: yes
AI-Tool: codex gpt-5.4 xhigh

short_url.nimble

@@ -1,6 +1,6 @@
 # Package
 
-version       = "1.0.0"
+version       = "1.0.1"
 author        = "Jonathan Bernard"
 description   = "URL shortener/expander for Probatem at https://pbtm.us"
 license       = "GPL3"
@@ -11,7 +11,7 @@ bin           = @["short_url"]
 # Dependencies
 
 requires "nim >= 2.2.4"
-requires @["cliutils", "mummy", "namespaced_logging >= 2.1.2", "webby"]
+requires @["cliutils", "mummy", "namespaced_logging >= 2.1.2", "regex", "webby"]
 
 task updateVersion, "Update the version of this package.":
   exec "update_version interactive src/short_url.nim"