Update sqlalchemy requirement from <=1.4.23,>=1.3.18 to >=1.3.18,<1.4.26

Updates the requirements on [sqlalchemy](https://github.com/sqlalchemy/sqlalchemy) to permit the latest version.
- [Release notes](https://github.com/sqlalchemy/sqlalchemy/releases)
- [Changelog](https://github.com/sqlalchemy/sqlalchemy/blob/master/CHANGES)
- [Commits](https://github.com/sqlalchemy/sqlalchemy/commits)

---
updated-dependencies:
- dependency-name: sqlalchemy
  dependency-type: direct:production
...

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

setup.py

@@ -65,7 +65,7 @@ setup(
     install_requires=[
         "databases>=0.3.2,<0.5.3",
         "pydantic>=1.6.1,!=1.7,!=1.7.1,!=1.7.2,!=1.7.3,!=1.8,!=1.8.1,<=1.8.2",
-        "sqlalchemy>=1.3.18,<=1.4.23",
+        "sqlalchemy>=1.3.18,<1.4.26",
         "typing_extensions>=3.7,<3.10.0.3",
     ],
     extras_require={