Bump dnspython from 2.2.1 to 2.3.0 (#1975)

* Bump dnspython from 2.2.1 to 2.3.0

Bumps [dnspython](https://github.com/rthalley/dnspython) from 2.2.1 to 2.3.0.
- [Release notes](https://github.com/rthalley/dnspython/releases)
- [Changelog](https://github.com/rthalley/dnspython/blob/master/doc/whatsnew.rst)
- [Commits](https://github.com/rthalley/dnspython/compare/v2.2.1...v2.3.0)

---
updated-dependencies:
- dependency-name: dnspython
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update dnspython==2.3.0

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: JonnyWong16 <9099342+JonnyWong16@users.noreply.github.com>

[skip ci]

lib/dns/dnssectypes.py

@@ -0,0 +1,71 @@
+# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
+
+# Copyright (C) 2003-2017 Nominum, Inc.
+#
+# Permission to use, copy, modify, and distribute this software and its
+# documentation for any purpose with or without fee is hereby granted,
+# provided that the above copyright notice and this permission notice
+# appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+"""Common DNSSEC-related types."""
+
+# This is a separate file to avoid import circularity between dns.dnssec and
+# the implementations of the DS and DNSKEY types.
+
+import dns.enum
+
+
+class Algorithm(dns.enum.IntEnum):
+    RSAMD5 = 1
+    DH = 2
+    DSA = 3
+    ECC = 4
+    RSASHA1 = 5
+    DSANSEC3SHA1 = 6
+    RSASHA1NSEC3SHA1 = 7
+    RSASHA256 = 8
+    RSASHA512 = 10
+    ECCGOST = 12
+    ECDSAP256SHA256 = 13
+    ECDSAP384SHA384 = 14
+    ED25519 = 15
+    ED448 = 16
+    INDIRECT = 252
+    PRIVATEDNS = 253
+    PRIVATEOID = 254
+
+    @classmethod
+    def _maximum(cls):
+        return 255
+
+
+class DSDigest(dns.enum.IntEnum):
+    """DNSSEC Delegation Signer Digest Algorithm"""
+
+    NULL = 0
+    SHA1 = 1
+    SHA256 = 2
+    GOST = 3
+    SHA384 = 4
+
+    @classmethod
+    def _maximum(cls):
+        return 255
+
+
+class NSEC3Hash(dns.enum.IntEnum):
+    """NSEC3 hash algorithm"""
+
+    SHA1 = 1
+
+    @classmethod
+    def _maximum(cls):
+        return 255