update builder to use go1.21

Signed-off-by: cpanato <[email protected]>

Author: cpanato

.github/workflows/validate-release.yml

@@ -33,9 +33,9 @@ jobs:
     steps:
       - name: Check Signature
         run: |
-          cosign verify ghcr.io/gythialy/golang-cross:v1.21.5-0@sha256:1ae1126ad52bc4c0950ea67ea5c30623fd0d3bc0f1aac6ba99e3ba5d7ea5d5ac \
+          cosign verify ghcr.io/gythialy/golang-cross:v1.21.6-0@sha256:c00bdb060aff03e8042f41ed0c11a0bbbb01e2ea3f65733ce037497fcb83d5d7 \
           --certificate-oidc-issuer https://token.actions.githubusercontent.com \
-          --certificate-identity "https://github.com/gythialy/golang-cross/.github/workflows/release-golang-cross.yml@refs/tags/v1.21.5-0"
+          --certificate-identity "https://github.com/gythialy/golang-cross/.github/workflows/release-golang-cross.yml@refs/tags/v1.21.6-0"
         env:
           TUF_ROOT: /tmp
 
@@ -44,7 +44,7 @@ jobs:
     needs:
       - check-signature
     container:
-      image: ghcr.io/gythialy/golang-cross:v1.21.5-0@sha256:1ae1126ad52bc4c0950ea67ea5c30623fd0d3bc0f1aac6ba99e3ba5d7ea5d5ac
+      image: ghcr.io/gythialy/golang-cross:v1.21.6-0@sha256:c00bdb060aff03e8042f41ed0c11a0bbbb01e2ea3f65733ce037497fcb83d5d7
 
     steps:
       - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1

release/cloudbuild.yaml

@@ -38,13 +38,13 @@ steps:
   - TUF_ROOT=/tmp
   args:
   - 'verify'
-  - 'ghcr.io/gythialy/golang-cross:v1.21.5-0@sha256:1ae1126ad52bc4c0950ea67ea5c30623fd0d3bc0f1aac6ba99e3ba5d7ea5d5ac'
+  - 'ghcr.io/gythialy/golang-cross:v1.21.6-0@sha256:c00bdb060aff03e8042f41ed0c11a0bbbb01e2ea3f65733ce037497fcb83d5d7'
   - '--certificate-oidc-issuer'
   - "https://token.actions.githubusercontent.com"
   - '--certificate-identity'
-  - "https://github.com/gythialy/golang-cross/.github/workflows/release-golang-cross.yml@refs/tags/v1.21.5-0"
+  - "https://github.com/gythialy/golang-cross/.github/workflows/release-golang-cross.yml@refs/tags/v1.21.6-0"
 
-- name: ghcr.io/gythialy/golang-cross:v1.21.5-0@sha256:1ae1126ad52bc4c0950ea67ea5c30623fd0d3bc0f1aac6ba99e3ba5d7ea5d5ac
+- name: ghcr.io/gythialy/golang-cross:v1.21.6-0@sha256:c00bdb060aff03e8042f41ed0c11a0bbbb01e2ea3f65733ce037497fcb83d5d7
   entrypoint: /bin/sh
   dir: "go/src/sigstore/rekor"
   env:
@@ -67,7 +67,7 @@ steps:
       gcloud auth configure-docker \
       && make release
 
-- name: ghcr.io/gythialy/golang-cross:v1.21.5-0@sha256:1ae1126ad52bc4c0950ea67ea5c30623fd0d3bc0f1aac6ba99e3ba5d7ea5d5ac
+- name: ghcr.io/gythialy/golang-cross:v1.21.6-0@sha256:c00bdb060aff03e8042f41ed0c11a0bbbb01e2ea3f65733ce037497fcb83d5d7
   entrypoint: 'bash'
   dir: "go/src/sigstore/rekor"
   env: