fix: handle dependency update command failures

.github/prompts/update-dependencies.md

@@ -19,7 +19,27 @@ Update all dependencies to their latest versions:
 pnpm update-outdated-deps
 ```
 
-Then, check if any `package.json` files were modified:
+**If the command fails** (non-zero exit code), create an issue and STOP:
+
+```bash
+gh issue create \
+  --title "[agent] Dependency update command failed" \
+  --body "## Dependency update failure
+
+The \`pnpm update-outdated-deps\` command failed before any validation could run.
+
+## Error
+
+<Paste the error output from the failed command>
+
+## Workflow run
+
+$GITHUB_SERVER_URL/$GITHUB_REPOSITORY/actions/runs/$GITHUB_RUN_ID"
+```
+
+Then STOP. You are done.
+
+**If the command succeeds**, check if any `package.json` files were modified:
 
 ```bash
 git diff --name-only -- '**/package.json' ':!node_modules'

pnpm-workspace.yaml

@@ -9,6 +9,10 @@ packages:
 #   - '@workleap*'
 #   - '@typescript/native-preview*'
 
+overrides:
+  # fast-xml-parser@5.5.0 was published with a broken local file: dependency
+  fast-xml-parser: <5.5.0
+
 onlyBuiltDependencies:
   - '@parcel/watcher'
   - '@swc/core'