chore: optimize og images

src/posts/2023/fastmail-handling-inbound-email-with-regex-filters-now-with-chatgpt.md

@@ -3,7 +3,7 @@ date: '2023-02-17'
 title: 'Workflows: handling inbound email on Fastmail with regular expressions (now featuring ChatGPT)'
 draft: false
 tags: ['Email', 'Fastmail', 'regular expressions', 'workflows', 'ChatGPT']
-image: /assets/img/og/fastmail-workflow.jpg
+image: /assets/img/og/fastmail-workflow.webp
 ---
 
 I've been using Fastmail for years now and have explored a number of different approaches to handling mail. I've approached it by creating rules targeting lists of top level domains, I've gone with no rules at all and a heavy-handed approach to unsubscribing from messages (operating under the idea that _everything_ warrants being seen and triaged) and I've even used HEY.<!-- excerpt -->[^1]

src/posts/2023/i-block-ads.md

@@ -3,7 +3,7 @@ date: '2023-05-23'
 title: 'I block ads'
 draft: false
 tags: ['advertising', 'privacy', 'tech']
-image: /assets/img/og/adblocks.jpg
+image: /assets/img/og/adblocks.webp
 ---
 
 I block ads in the browser.