build(deps): bump electron to 43.8.3, undici to 7.30.1 and follow-redirects to 1.16.1

- Resolve new high-severity audit advisories blocking CI
- Add changelog fragment for patched dependencies

changes/patched-electron-undici-follow-redirects.md

@@ -0,0 +1,4 @@
+type: fixed
+area: dependencies
+
+- Updated Electron to 43.8.3 and undici to 7.30.1, and pinned follow-redirects to 1.16.1, to resolve new security advisories.