chore(deps): Bump golang from 1.25.5-alpine3.22 to 1.26rc2-alpine3.22 (#560)

Bumps golang from 1.25.5-alpine3.22 to 1.26rc2-alpine3.22.

---
updated-dependencies:
- dependency-name: golang
  dependency-version: 1.26rc2-alpine3.22
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Dockerfile

@@ -1,6 +1,6 @@
 FROM --platform=$BUILDPLATFORM tonistiigi/xx:1.9.0@sha256:c64defb9ed5a91eacb37f96ccc3d4cd72521c4bd18d5442905b95e2226b0e707 AS xx
 
-FROM --platform=$BUILDPLATFORM golang:1.25.5-alpine3.22@sha256:3587db7cc96576822c606d119729370dbf581931c5f43ac6d3fa03ab4ed85a10 AS builder
+FROM --platform=$BUILDPLATFORM golang:1.26rc2-alpine3.22@sha256:9cdde6d36f579aed530b070137a2ae7e42a936a3289152ce40f49b17409860e1 AS builder
 
 COPY --from=xx / /