dockerfile: bump library/golang from 1db1276 to 576da1a

Bumps library/golang from `1db1276` to `576da1a`.

---
updated-dependencies:
- dependency-name: library/golang
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM docker.io/library/golang:1.20.2-alpine3.17@sha256:1db127655b32aa559e32ed3754ed2ea735204d967a433e4b605aed1dd44c5084 as builder
+FROM docker.io/library/golang:1.20.2-alpine3.17@sha256:576da1aa73f8ffa3dc6a7577b6032bd834aa84f2e1714d3e7e96b06b49f4e177 as builder
 WORKDIR /go/src/github.com/cilium/hubble
 RUN apk add --no-cache git make
 COPY . .