Bump minimum supported toolz to 0.12.0 (#9151)

Author: jrbourbeau

continuous_integration/environment-mindeps.yaml

@@ -14,7 +14,7 @@ dependencies:
   - pyyaml=5.4.1
   - sortedcontainers=2.0.5
   - tblib=1.6.0
-  - toolz=0.10.0
+  - toolz=0.12.0
   - tornado=6.2.0
   - urllib3=1.26.5
   - zict=3.0.0

pyproject.toml

@@ -37,7 +37,7 @@ dependencies = [
     "pyyaml >= 5.4.1",
     "sortedcontainers >= 2.0.5",
     "tblib >= 1.6.0,!=3.2.0,!=3.2.1",
-    "toolz >= 0.11.2",
+    "toolz >= 0.12.0",
     "tornado >= 6.2.0",
     "urllib3 >= 1.26.5",
     "zict >= 3.0.0",