Update itsdangerous requirement from ~=1.1 to >=1.1,<3.0 (#1325)

Updates the requirements on [itsdangerous](https://github.com/pallets/itsdangerous) to permit the latest version.
- [Release notes](https://github.com/pallets/itsdangerous/releases)
- [Changelog](https://github.com/pallets/itsdangerous/blob/main/CHANGES.rst)
- [Commits](https://github.com/pallets/itsdangerous/compare/1.1.0...2.0.0)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

setup.py

@@ -58,7 +58,7 @@ setup(
         "asgi-csrf>=0.6",
         "PyYAML~=5.3",
         "mergedeep>=1.1.1,<1.4.0",
-        "itsdangerous~=1.1",
+        "itsdangerous>=1.1,<3.0",
         "python-baseconv==1.2.2",
     ],
     entry_points="""