CI: Use at most pandas 1.5

pandas 2.0 is not available in conda's main channel yet

.github/workflows/tests-workflow.yaml

@@ -14,8 +14,8 @@ jobs:
         config:
           - py38_pandas10_numpy119_sklearn12
           - py39_pandas13_numpy121_sklearn12
-          - py310_pandas15_numpy121_sklearn12
-          - py311_pandas20_numpy123_sklearn12
+          - py310_pandas14_numpy121_sklearn12
+          - py311_pandas15_numpy123_sklearn12
         runner:
           - ubuntu-latest
           - macos-latest
@@ -101,7 +101,7 @@ jobs:
       - name: Set dependencies
         id: dependencies
         env:
-          DEPS_CONFIG: py310_pandas15_numpy121_sklearn12
+          DEPS_CONFIG: py310_pandas14_numpy121_sklearn12
         run: |
           source ci/deps/${DEPS_CONFIG}.sh
           echo "CI_PYTHON_VERSION=${CI_PYTHON_VERSION}" >> $GITHUB_ENV

ci/appveyor/py310.ps1

@@ -1,4 +1,4 @@
 $env:CI_PYTHON_VERSION="3.10.*"
-$env:CI_PANDAS_VERSION="1.5.*"
+$env:CI_PANDAS_VERSION="1.4.*"
 $env:CI_NUMPY_VERSION="1.21.*"
 $env:CI_SKLEARN_VERSION="1.2.*"

ci/appveyor/py311.ps1

@@ -1,4 +1,4 @@
 $env:CI_PYTHON_VERSION="3.11.*"
-$env:CI_PANDAS_VERSION="2.0.*"
+$env:CI_PANDAS_VERSION="1.5.*"
 $env:CI_NUMPY_VERSION="1.23.*"
 $env:CI_SKLEARN_VERSION="1.2.*"

ci/deps/py310_pandas15_numpy121_sklearn12.sh → ci/deps/py310_pandas14_numpy121_sklearn12.sh

@@ -1,6 +1,6 @@
 # shellcheck shell=sh
 export CI_PYTHON_VERSION='3.10.*'
-export CI_PANDAS_VERSION='1.5.*'
+export CI_PANDAS_VERSION='1.4.*'
 export CI_NUMPY_VERSION='1.21.*'
 export CI_SKLEARN_VERSION='1.2.*'
 export CI_NO_SLOW=true

ci/deps/py311_pandas20_numpy123_sklearn12.sh → ci/deps/py311_pandas15_numpy123_sklearn12.sh

@@ -1,6 +1,6 @@
 # shellcheck shell=sh
 export CI_PYTHON_VERSION='3.11.*'
-export CI_PANDAS_VERSION='2.0.*'
+export CI_PANDAS_VERSION='1.5.*'
 export CI_NUMPY_VERSION='1.23.*'
 export CI_SKLEARN_VERSION='1.2.*'
 export CI_NO_SLOW=false