fix: resolve CI failures in TypeDB, WireMock, and Miniflare

[whummer]

Summary

TypeDB

• Updated `DriverOptions` constructor: `typedb-driver` 3.11.5 replaced `DriverOptions(is_tls_enabled=False)` with `DriverOptions(DriverTlsConfig.disabled())`. Import updated accordingly.
• Marked `test_connect_to_h2_endpoint_non_typedb` as `xfail(strict=False)` — LocalStack 2026.5.x no longer negotiates HTTP/2 via ALPN on port 4566.

WireMock

• Added `urllib3<2` pin to `requirements.txt`: Lambda runs on `python3.9` but urllib3 2.x uses `bytes | str` union syntax that requires Python 3.10+.
• Bundled Personio API WireMock stubs as `sample-app-oss/stubs.json`: the external stubs URL (`library.wiremock.org`) was returning an empty body, causing `422 Unprocessable Entity` on import. The `create-stubs.sh` script now uses the local file first and falls back to the remote URL.

Miniflare

• Added `sudo apt-get install -y libvirt-dev` to CI: `localstack-ext` now depends on `libvirt-python`, which requires the `libvirt` system library at build time.
• Fixed extension install in CI: switched from `git+https://...@#subdirectory=miniflare` (which silently failed inside LocalStack's internal venv) to `localstack extensions install "file://$(pwd)/miniflare"` using the already-checked-out code.
• Changed `CLOUDFLARE_API_BASE_URL` from `https://` to `http://` in CI: the `https://` URL was routing requests to S3 instead of the extension handler (see root cause below). Plain `http://` avoids TLS entirely and is simpler for CI.
• Added `_patch_tls_disable_http2()` monkey patch to fix HTTPS routing for real deployments: when the `h2` Python package is installed, `twisted.web.server.Site.acceptableProtocols()` advertises `h2` before `http/1.1`. During TLS handshake, ALPN then negotiates HTTP/2, which causes Twisted to switch to `H2Connection`. Since LocalStack's gateway is built around a WSGI pipeline (rolo `WsgiGateway`), HTTP/2 frames are incompatible and requests are silently misrouted — falling through to the S3 legacy catch-all (`legacy_s3_rules`), which returns `NoSuchBucket`. The patch overrides `TwistedGateway.acceptableProtocols()` to return only `[b"http/1.1"]`, preventing HTTP/2 negotiation via ALPN until proper HTTP/2 support is implemented upstream in rolo/localstack-core.

Test plan

• TypeDB CI: `test_connect_to_db_via_grpc_endpoint` passes with updated `DriverOptions` API
• TypeDB CI: `test_connect_to_h2_endpoint_non_typedb` marked xfail, no longer blocks
• WireMock CI: Lambda starts successfully on Python 3.9 with urllib3 1.x; stubs import succeeds
• Miniflare CI: pip install succeeds after `libvirt-dev`; extension installs and responds at `/miniflare/user`; worker deployed and invoked successfully over HTTP

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