feat: add collapsable section to house the diff in the PR comment

Author: darrylb-github

docs/pr_comment.md

@@ -15,6 +15,9 @@ and the base branch
   ([br-misty-resonance-a5jvokot](https://console.neon.tech/app/projects/holy-wind-90398863/branches/br-misty-resonance-a5jvokot))
 - Database: neondb
 
+<details><summary>Diff</summary>
+<p>
+
 ```diff
 Index: neondb-schema.sql
 ===================================================================
@@ -44,4 +47,7 @@ Index: neondb-schema.sql
 
 ```
 
+</p>
+</details> 
+
 This comment was last updated at 11/20/2024 10:05:59 AM

src/diff.ts

@@ -177,8 +177,14 @@ Schema diff between the compare branch ([${compareBranch.name}](${compareBranchU
 - Compare branch: ${compareBranch.name} ([${compareBranch.id}](${compareBranchURL})) ${compareBranch.protected ? '🔒' : ''}
 - Database: ${database}
 
+<details><summary>Diff</summary>
+<p>
+
 ${diffContent}
 
+</p>
+</details> 
+
 This comment was last updated at ${new Date().toUTCString()}
 `
 }