fix(deps): upgrade pandas to 3.1 and fix EOS deprecations (#1469)

* build(deps): bump pandas from 3.0.6 to 3.1.0

* fix(prediction): avoid pandas 3.1 deprecation warnings

pyproject.toml

@@ -34,7 +34,7 @@ dependencies = [
     "tzfpy==2.1.1",
     "deap==1.4.4",
     "requests==2.34.2",
-    "pandas==3.0.6",
+    "pandas==3.1.0",
     "pendulum==3.3.0",
     "platformdirs==4.13.5",
     "psutil==7.2.2",
@@ -164,6 +164,8 @@ markers = [
     "docker: marks tests that require a local Docker engine"
 ]
 filterwarnings = [
+    # Treat pandas 4 deprecations in EOS code as errors; upstream callers remain visible.
+    "error::pandas.errors.Pandas4Warning:akkudoktoreos\\.",
     # pvlib may exercise SciPy's root solver at night/zero irradiance; the resulting
     # PV output is explicitly verified as zero by integration tests.
     "ignore:invalid value encountered in divide:RuntimeWarning:scipy\\.optimize\\._chandrupatla",