chore(deps): bump golang from `fd78f2f` to `a6a7f1f` (#3086)

Bumps golang from `fd78f2f` to `a6a7f1f`.

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

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

Dockerfile.standalone

@@ -1,6 +1,6 @@
 # This version of Dockerfile is for building without external dependencies.
 # Build a multi-platform image e.g. `docker buildx build --push --platform linux/arm64,linux/amd64 --tag external-secrets:dev --file Dockerfile.standalone .`
-FROM golang:1.21.6-alpine@sha256:fd78f2fb1e49bcf343079bbbb851c936a18fc694df993cbddaa24ace0cc724c5 AS builder
+FROM golang:1.21.6-alpine@sha256:a6a7f1fcf12f5efa9e04b1e75020931a616cd707f14f62ab5262bfbe109aa84a AS builder
 ARG TARGETOS
 ARG TARGETARCH
 ENV CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH}

tilt.debug.dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.21.6@sha256:5f5d61dcb58900bc57b230431b6367c900f9982b583adcabf9fa93fd0aa5544a
+FROM golang:1.21.6@sha256:76aadd914a29a2ee7a6b0f3389bb2fdb87727291d688e1d972abe6c0fa6f2ee0
 WORKDIR /
 COPY ./bin/external-secrets /external-secrets