Pin pandas < 2 (#7650)

* Pin pandas  < 2

Pandas is expecting to release v2 in two weeks (pandas-dev/pandas#46776 (comment)). But we are still incompatible with their main branch: 
- #7441 
- #7420

This PR pins pandas to `<2`

* modify requirements.txt

* Update requirements

Author: dcherian

ci/requirements/all-but-dask.yml

@@ -26,7 +26,7 @@ dependencies:
   - numbagg
   - numpy<1.24
   - packaging
-  - pandas
+  - pandas<2
   - pint
   - pip
   - pseudonetcdf

ci/requirements/doc.yml

@@ -20,7 +20,7 @@ dependencies:
   - numba
   - numpy>=1.21,<1.24
   - packaging>=21.3
-  - pandas>=1.4
+  - pandas>=1.4,<2
   - pooch
   - pip
   - pre-commit

ci/requirements/environment-py311.yml

@@ -28,7 +28,7 @@ dependencies:
   - numexpr
   - numpy
   - packaging
-  - pandas
+  - pandas<2
   - pint
   - pip
   - pooch

ci/requirements/environment-windows-py311.yml

@@ -25,7 +25,7 @@ dependencies:
   # - numbagg
   - numpy
   - packaging
-  - pandas
+  - pandas<2
   - pint
   - pip
   - pre-commit

ci/requirements/environment-windows.yml

@@ -25,7 +25,7 @@ dependencies:
   - numbagg
   - numpy<1.24
   - packaging
-  - pandas
+  - pandas<2
   - pint
   - pip
   - pre-commit

ci/requirements/environment.yml

@@ -28,7 +28,7 @@ dependencies:
   - numexpr
   - numpy<1.24
   - packaging
-  - pandas
+  - pandas<2
   - pint
   - pip
   - pooch

requirements.txt

@@ -4,4 +4,4 @@
 
 numpy >= 1.21
 packaging >= 21.3
-pandas >= 1.4
+pandas >= 1.4, <2

setup.cfg

@@ -76,7 +76,7 @@ include_package_data = True
 python_requires = >=3.9
 install_requires =
     numpy >= 1.21  # recommended to use >= 1.22 for full quantile method support
-    pandas >= 1.4
+    pandas >= 1.4, <2
     packaging >= 21.3
 
 [options.extras_require]