Fix CI

Author: bashtage

ci/azure_template_posix.yml

@@ -23,7 +23,7 @@ jobs:
         PANDAS: 1.1.0
         STATSMODELS: 0.12.0
         XARRAY: 0.16.0
-        FORMULAIC: 0.6.1
+        FORMULAIC: 0.6.5
         test.install: true
       python39_mid:
         python.version: '3.9'
@@ -33,7 +33,7 @@ jobs:
         STATSMODELS: 0.12.0
         XARRAY: 0.18.0
         XXHASH: true
-        FORMULAIC: 0.6.1
+        FORMULAIC: 0.6.5
         test.install: true
       python39_recent:
         python.version: '3.9'
@@ -42,7 +42,7 @@ jobs:
         PANDAS: 1.3.0
         STATSMODELS: 0.13.0
         XARRAY: 0.20.0
-        FORMULAIC: 0.6.1
+        FORMULAIC: 0.6.5
         test.install: true
       python310_no_cython:
         python.version: '3.10'