Revert pull_request_target (#225)

`pull_request_target` has not been the drop-in replacement it promises
to be. Revert its addition and disable build jobs for external PRs.

---------

Co-authored-by: Copilot <[email protected]>
Signed-off-by: dalthecow <[email protected]>

Author: 2 people

.github/workflows/development.yml

@@ -139,11 +139,6 @@ jobs:
         with:
           node-version: '22'
 
-      - name: Set up Node.js 22
-        uses: actions/setup-node@v4
-        with:
-          node-version: '22'
-
       - name: Install dependencies
         run: npm ci