Bump dependencies and requirements to meet SPEC0

Drop support for Python 3.8, 3.9

.github/workflows/pythonpackage.yml

@@ -18,7 +18,7 @@ jobs:
     if: always()
     strategy:
       matrix:
-        python-version: [3.8, 3.9, '3.10']
+        python-version: ['3.10', '3.11', '3.12']
       fail-fast: false
 
     steps:
@@ -44,7 +44,7 @@ jobs:
     if: always()
     strategy:
       matrix:
-        python-version: [3.8, 3.9, '3.10']
+        python-version: ['3.10', '3.11', '3.12']
       fail-fast: false
 
     steps:

.github/workflows/pythonpublish.yml

@@ -15,7 +15,7 @@ jobs:
     timeout-minutes: 30
     strategy:
       matrix:
-        python-version: [3.8, 3.9, '3.10']
+        python-version: ['3.10', '3.11', '3.12']
 
     steps:
     - uses: actions/checkout@v2

pyproject.toml

@@ -24,17 +24,17 @@ classifiers = [
     "Operating System :: OS Independent",
 ]
 
-requires-python = ">=3.8"
+requires-python = ">=3.10"
 dependencies = [
     "boututils~=0.1.7",
     "dill~=0.3,!=0.3.5,!=0.3.5.1",
     "func_timeout~=4.3",
-    "matplotlib~=3.2",
+    "matplotlib~=3.7",
     "netCDF4~=1.5",
-    "numpy~=1.18",
+    "numpy>=1.24",
     "optionsfactory~=1.0.11",
     "PyYAML>=5.1",
-    "scipy~=1.6",
+    "scipy~=1.10",
     "Qt.py~=1.2",
 ]
 
@@ -50,6 +50,7 @@ docs = [
 ]
 tests = [
     "pytest >= 3.3.0",
+    "xarray >= 2022.9.0",
 ]
 
 [project.scripts]