chore(deps): update dependency jekyll-contentblocks to v2 - #6530

Changed pages include:

• admin-api/index.html - view
• ai-gateway/index.html - view
• contributing/index.html - view
• deck/index.html - view
• event-gateway/index.html - view
• gateway/index.html - view
• inso-cli/index.html - view
• koh/index.html - view
• kongctl/index.html - view
• konnect-api/index.html - view

There are more changes not included in the list