Update purl-spec to dd9ffe9 and regenerate type data

Adds the new "brew" and "git" types and picks up changes to 17 existing
definitions, bringing the registry to 42 types.

The hex doctest is updated for the re-encoded repository_url example, and
two groups of new spec tests are excluded:

  - The git tests expect an unencoded "/" inside the name (for example
    "forgejo/forgejo"), but "/" is the namespace separator in the purl
    grammar, so it has to be encoded as %2F. One of those fixtures is also
    corrupt, expecting "forgejoforgejo/" with the slash misplaced.
  - The cpan rule that a distribution name must not contain "::" only
    exists as prose in the name_definition note, not as a machine readable
    field such as permitted_characters, so it cannot be enforced from the
    type definition.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: maennchen

priv/spec

@@ -456,7 +456,7 @@ Lookup Type Specification
   examples =>
       [<<"pkg:hex/jason@1.1.2">>,<<"pkg:hex/acme/foo@2.3.">>,
        <<"pkg:hex/phoenix_html@2.13.3#priv/static/phoenix_html.js">>,
-       <<"pkg:hex/bar@1.2.3", 63, "repository_url=https://myrepo.example.com">>],
+       <<"pkg:hex/bar@1.2.3", 63, "repository_url=https:%2F%2Fmyrepo.example.com">>],
   reference_urls => []}
 ```
 """.