docker(deps): bump golang from 1.24.6-alpine3.22 to 1.25.2-alpine3.22

Bumps golang from 1.24.6-alpine3.22 to 1.25.2-alpine3.22.

---
updated-dependencies:
- dependency-name: golang
  dependency-version: 1.25.2-alpine3.22
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Dockerfile

@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM --platform=$BUILDPLATFORM golang:1.24.6-alpine3.22 AS builder
+FROM --platform=$BUILDPLATFORM golang:1.25.2-alpine3.22 AS builder
 ARG GOFIPS140=v1.0.0
 
 WORKDIR /btp-manager-workspace