Merge pull request #277 from IFCA-Advanced-Computing/dependabot/pip/matplotlib-gte-3.6.0-and-lt-3.9

Update matplotlib requirement from <3.8,>=3.6.0 to >=3.6.0,<3.9

Author: Jaime Céspedes Sisniega

pyproject.toml

@@ -36,7 +36,7 @@ classifiers = [
 ]
 requires-python = ">=3.8,<3.12"
 dependencies = [
-    "matplotlib>=3.6.0,<3.8",
+    "matplotlib>=3.6.0,<3.9",
     "numpy>=1.24.0,<1.26",
     "requests>=2.31.0,<2.32",
     "scipy>=1.10.0,<1.11",