[dwisiswant0]

Proposed changes

On dev, govulncheck reports 9 vulnerabilities from 5 modules in code
that proxify calls. Bump each module to the lowest version that fixes
them.

golang.org/x/net goes from v0.59.0 to v0.60.0 for GO-2026-6603,
GO-2026-6610, GO-2026-6611, GO-2026-6612 and GO-2026-6617.
github.com/klauspost/compress goes from v1.18.2 to v1.20.2 for
GO-2026-6865, github.com/andybalholm/brotli from v1.2.0 to v1.2.7 for
GO-2026-6888, and github.com/yuin/goldmark from v1.7.4 to v1.7.17 for
GO-2026-5320.

github.com/elazarl/goproxy goes from
v0.0.0-20221015165544-a0805db90819 to the untagged revision
v0.0.0-20230731152917-f99041a5c027 for GO-2023-1941. That revision is
the fixed version the advisory lists, and goproxy had no tags until
v1.2.1 in December 2024.

The go line stays at 1.26.10, so dependents need no newer Go and the
default GODEBUG settings stay the same.

dev already clears the other advisories that #779 lists for called
code. govulncheck still reports GO-2026-5932 in golang.org/x/crypto
v0.57.0, and GO-2026-6860 and GO-2026-6866 in golang.org/x/net v0.60.0,
but not in code that proxify calls.

Fixes: #779

Checklist

• Pull request is created against the dev branch
• All checks passed (lint, unit/integration/regression tests etc.) with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate) (N/A)