Bump jupyter-server from 1.13.5 to 1.15.4

Bumps [jupyter-server](https://github.com/jupyter/jupyter_server) from 1.13.5 to 1.15.4.
- [Release notes](https://github.com/jupyter/jupyter_server/releases)
- [Changelog](https://github.com/jupyter-server/jupyter_server/blob/main/CHANGELOG.md)
- [Commits](jupyter-server/jupyter_server@v1.13.5...v1.15.4)

---
updated-dependencies:
- dependency-name: jupyter-server
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements-python39-rf31.txt

@@ -57,7 +57,7 @@ jupyter-core==4.9.2
 jupyter-highlight-selected-word==0.2.0
 jupyter-latex-envs==1.4.6
 jupyter-nbextensions-configurator==0.4.1
-jupyter-server==1.13.5
+jupyter-server==1.15.4
 jupyter-starters==1.1.0
 jupyterlab==3.2.9
 jupyterlab-pygments==0.1.2

requirements-python39-rf32.txt

@@ -58,7 +58,7 @@ jupyter-core==4.9.2
 jupyter-highlight-selected-word==0.2.0
 jupyter-latex-envs==1.4.6
 jupyter-nbextensions-configurator==0.4.1
-jupyter-server==1.13.5
+jupyter-server==1.15.4
 jupyter-starters==1.1.0
 jupyterlab==3.2.9
 jupyterlab-pygments==0.1.2

requirements-python39-rf40.txt

@@ -60,7 +60,7 @@ jupyter-core==4.9.2
 jupyter-highlight-selected-word==0.2.0
 jupyter-latex-envs==1.4.6
 jupyter-nbextensions-configurator==0.4.1
-jupyter-server==1.13.5
+jupyter-server==1.15.4
 jupyter-starters==1.1.0
 jupyterlab==3.2.9
 jupyterlab-pygments==0.1.2

requirements-python39-rf41.txt

@@ -58,7 +58,7 @@ jupyter-core==4.9.2
 jupyter-highlight-selected-word==0.2.0
 jupyter-latex-envs==1.4.6
 jupyter-nbextensions-configurator==0.4.1
-jupyter-server==1.13.5
+jupyter-server==1.15.4
 jupyter-starters==1.1.0
 jupyterlab==3.2.9
 jupyterlab-pygments==0.1.2

requirements-python39-rf50.txt

@@ -58,7 +58,7 @@ jupyter-core==4.9.2
 jupyter-highlight-selected-word==0.2.0
 jupyter-latex-envs==1.4.6
 jupyter-nbextensions-configurator==0.4.1
-jupyter-server==1.13.5
+jupyter-server==1.15.4
 jupyter-starters==1.1.0
 jupyterlab==3.2.9
 jupyterlab-pygments==0.1.2