docs: Fix security warnings pointed by dependabot

- Bump up jinja2 version
- Improve regex for URLs

Signed-off-by: Renê de Souza Pinto <rene@renesp.com.br>

Author: rene

docs/mkdocs/prepare_mkdocs.py

@@ -18,7 +18,8 @@
 
 # Regex
 reLinks  = re.compile(r'\[([^\]]+)\]\(([^)]+)\)')
-reURL    = re.compile(r'[A-Za-z0-9]+://[A-Za-z0-9%-_]+(/[A-Za-z0-9%-_])*(#|\\?)[A-Za-z0-9%-_&=]*')
+# pylint: disable-next=line-too-long
+reURL    = re.compile(r'^(https?|ftp):\/\/([A-Za-z0-9-]+\.)+[A-Za-z]{2,6}(:\d+)?(\/[A-Za-z0-9-._~:?#[\]@!$&\'()*+,;=\/]*)?$')
 reMAIL   = re.compile(r'mailto:.*')
 reANCHOR = re.compile(r'^#.*')
 

docs/mkdocs/requirements.txt

@@ -1,2 +1,2 @@
-jinja2<3.1.0
+jinja2>=3.1.6
 mkdocs==1.3.1