Unpin Cheetah as the poetry bug was fixed

packages/util/setup.cfg

@@ -51,7 +51,7 @@ python_requires = >=3.7
 jstree =
     dictobj
 template =
-    Cheetah3!=3.2.6.post2
+    Cheetah3
     future>=1.0.0
 
 [options.packages.find]

packages/web_apps/setup.cfg

@@ -42,7 +42,7 @@ install_requires =
     a2wsgi
     apispec
     Babel
-    Cheetah3!=3.2.6.post2
+    Cheetah3
     fastapi>=0.101.0
     gunicorn
     gxformat2

pyproject.toml

@@ -46,7 +46,7 @@ boltons = "*"
 boto = "*"
 bx-python = "*"
 celery = "*"
-Cheetah3 = "!=3.2.6.post2"  # yanked release, https://github.com/python-poetry/poetry/issues/2453
+Cheetah3 = "*"
 cloudauthz = "==0.6.0"
 cloudbridge = "*"
 circus = "*"