extension_ci: Switch back to upstream action (#51829)

This switches the action back to the upstream one where the changes were
merged (thanks @\huacnlee for the quick action)

Aside from that, it does some minor fixes: It adds the bumper as an
assignee on the extensions PR and also ensures we do not try to bump
here in the repo for the test extensions.

Release Notes:

- N/A

.github/workflows/extension_auto_bump.yml

@@ -7,6 +7,8 @@ on:
     - main
     paths:
     - extensions/**
+    - '!extensions/slash-commands-example/**'
+    - '!extensions/test-extension/**'
     - '!extensions/workflows/**'
     - '!extensions/*.md'
 jobs:

.github/workflows/extension_bump.yml

@@ -231,7 +231,7 @@ jobs:
         echo "extension_id=${EXTENSION_ID}" >> "$GITHUB_OUTPUT"
     - id: extension-update
       name: extension_bump::release_action
-      uses: zed-extensions/update-action@72da482880c2f32ec8aa6e0a0427ab92d52ae32d
+      uses: huacnlee/zed-extension-action@82920ff0876879f65ffbcfa3403589114a8919c6
       with:
         extension-name: ${{ steps.get-extension-id.outputs.extension_id }}
         push-to: zed-industries/extensions
@@ -269,12 +269,22 @@ jobs:
               return;
           }
 
+          // Assign staff member responsible for the bump
+          const pullNumber = parseInt(prNumber);
+
+          await github.rest.issues.addAssignees({
+              owner: 'zed-industries',
+              repo: 'extensions',
+              issue_number: pullNumber,
+              assignees: [author]
+          });
+          console.log(`Assigned ${author} to PR #${prNumber} in zed-industries/extensions`);
 
           // Get the GraphQL node ID
           const { data: pr } = await github.rest.pulls.get({
               owner: 'zed-industries',
               repo: 'extensions',
-              pull_number: parseInt(prNumber)
+              pull_number: pullNumber
           });
 
           await github.graphql(`