fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-MARKDOWNIT-6483324
- https://snyk.io/vuln/SNYK-JS-DOMPURIFY-8184974
- https://snyk.io/vuln/SNYK-JS-DOMPURIFY-7984421
- https://snyk.io/vuln/SNYK-JS-DOMPURIFY-8722251
- https://snyk.io/vuln/SNYK-JS-DOMPURIFY-6474511
- https://snyk.io/vuln/SNYK-JS-SANITIZEHTML-6256334

Author: snyk-bot

package.json

@@ -55,17 +55,17 @@
         "watch:labextension": "jupyter labextension watch ."
     },
     "dependencies": {
-        "@jupyterlab/application": "^4.0.0",
-        "@jupyterlab/codemirror": "^4.0.0",
-        "markdown-it": "^12.2.3",
+        "@jupyterlab/application": "^4.2.0",
+        "@jupyterlab/codemirror": "^4.2.0",
+        "markdown-it": "^13.0.2",
         "markdown-it-attrs": "^4.1.6",
         "markdown-it-deflist": "^2.0.3",
         "markdown-it-footnote": "^3.0.2",
         "markdown-it-implicit-figures": "^0.11.0",
         "markdown-it-sub": "^1.0.0",
         "markdown-it-sup": "^1.0.0",
         "markdown-it-task-lists": "^1.3.0",
-        "mermaid": "^9.1.7",
+        "mermaid": "^11.5.0",
         "wcwidth": "^1.0.1"
     },
     "devDependencies": {