Backport PR pandas-dev#43677: CI: Strict channel Priority (pandas-dev#43698)

Co-authored-by: Thomas Li <[email protected]>

Author: simonjayhawkins

.github/workflows/database.yml

@@ -2,7 +2,9 @@ name: Database
 
 on:
   push:
-    branches: [master]
+    branches:
+      - master
+      - 1.3.x
   pull_request:
     branches:
       - master
@@ -74,7 +76,7 @@ jobs:
     - uses: conda-incubator/setup-miniconda@v2
       with:
         activate-environment: pandas-dev
-        channel-priority: flexible
+        channel-priority: strict
         environment-file: ${{ matrix.ENV_FILE }}
         use-only-tar-bz2: true