build: bump panel from 1.5.3 to 1.5.4 (#1536)

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Author: dependabot[bot]

doc/changelog.d/1536.dependencies.md

@@ -0,0 +1 @@
+bump panel from 1.5.3 to 1.5.4

pyproject.toml

@@ -91,7 +91,7 @@ doc = [
     "notebook==7.2.2",
     "numpydoc==1.8.0",
     "numpy==2.1.3",
-    "panel==1.5.3",
+    "panel==1.5.4",
     "Pint==0.24.4",
     "protobuf==5.28.3",
     "pyvista[jupyter]==0.44.1",