gomod: bump zoekt to remove curl from image

Created by: keegancsmith

Total list of included commits:

• https://github.com/sourcegraph/zoekt/commit/44a2987733 Avoid allocating filename when checking if a document is tombstoned
• https://github.com/sourcegraph/zoekt/commit/d441288d7a all: remove curl
• https://github.com/sourcegraph/zoekt/commit/94ab14fe73 build: better support for symbols on the same line

Test Plan: already tested in zoekt repo, but also will rely on CI here.