fix: Bump hextra and hugo - #470

Changed pages include:

• index.html - view
• about/index.html - view
• fellowship/index.html - view
• help/index.html - view
• news/index.html - view
• participate/index.html - view
• resources/index.html - view
• about/collaborators/index.html - view
• about/eab/index.html - view
• about/principles/index.html - view

There are more changes not included in the list