chore(deps): bump library/golang from 1.21.3 to 1.21.9 (argoproj#17722)

Bumps library/golang from 1.21.3 to 1.21.9.

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

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

Dockerfile

@@ -4,7 +4,7 @@ ARG BASE_IMAGE=docker.io/library/ubuntu:22.04@sha256:0bced47fffa3361afa981854fca
 # Initial stage which pulls prepares build dependencies and CLI tooling we need for our final image
 # Also used as the image in CI jobs so needs all dependencies
 ####################################################################################################
-FROM docker.io/library/golang:1.21.8@sha256:856073656d1a517517792e6cdd2f7a5ef080d3ca2dff33e518c8412f140fdd2d AS builder
+FROM docker.io/library/golang:1.21.9@sha256:7d0dcbe5807b1ad7272a598fbf9d7af15b5e2bed4fd6c4c2b5b3684df0b317dd AS builder
 
 RUN echo 'deb http://deb.debian.org/debian buster-backports main' >> /etc/apt/sources.list
 
@@ -101,7 +101,7 @@ RUN HOST_ARCH=$TARGETARCH NODE_ENV='production' NODE_ONLINE_ENV='online' NODE_OP
 ####################################################################################################
 # Argo CD Build stage which performs the actual build of Argo CD binaries
 ####################################################################################################
-FROM --platform=$BUILDPLATFORM docker.io/library/golang:1.21.3@sha256:02d7116222536a5cf0fcf631f90b507758b669648e0f20186d2dc94a9b419a9b AS argocd-build
+FROM --platform=$BUILDPLATFORM docker.io/library/golang:1.21.9@sha256:7d0dcbe5807b1ad7272a598fbf9d7af15b5e2bed4fd6c4c2b5b3684df0b317dd AS argocd-build
 
 WORKDIR /go/src/github.com/argoproj/argo-cd