chore(kernel): bump KERNEL_REV to kernel main (statement-level query tags + proxy + UA)

Bump the pinned kernel from b676275 to 34b4c20 (current kernel main), which
brings:
  - #150 — per-statement query tags on the SEA wire (native query_tags array).
    This is what makes `executeStatement(sql, { queryTags })` actually reach the
    server on the kernel path — bringing statement-level query tags to parity
    with the Thrift backend (the driver already serialized them into
    statement_conf["query_tags"]; the kernel previously dropped that before the
    wire). Verified e2e: the tag now lands in system.query.history.query_tags.
  - #129 — programmatic HTTP/HTTPS proxy + per-connection socket timeout
    (additive optional napi ConnectionOptions fields; refreshed in index.d.ts).
  - #151 — caller User-Agent overwrites the kernel base UA for accurate
    query-source attribution.

Refreshes the committed napi types (native/kernel/index.d.ts) accordingly; the
new fields are optional, so no driver-side change is required.

Co-authored-by: Isaac
Signed-off-by: Madhavendra Rathore <madhavendra.rathore@databricks.com>

Author: msrathore-db

KERNEL_REV

@@ -1 +1 @@
-b676275f234b11a68cb4c8a2955d69cb3b786d97
+34b4c202cc127021c923903d59c841daa2b44fef