Update bottlerocket shasum (aws#278)

Author: Terry Howe

docs/content/en/docs/reference/artifacts.md

@@ -23,7 +23,7 @@ CARGO_NET_GIT_FETCH_WITH_CLI=true cargo install --force tuftool
 3. Download the root role tuftool will use to download the OVA
 ```
 curl -O "https://cache.bottlerocket.aws/root.json"
-sha512sum -c <<<"90393204232a1ad6b0a45528b1f7df1a3e37493b1e05b1c149f081849a292c8dafb4ea5f7ee17bcc664e35f66e37e4cfa4aae9de7a2a28aa31ae6ac3d9bea4d5  root.json"
+sha512sum -c <<<"e9b1ea5f9b4f95c9b55edada4238bf00b12845aa98bdd2d3edb63ff82a03ada19444546337ec6d6806cbf329027cf49f7fde31f54d551c5e02acbed7efe75785  root.json"
 ```
 4. Export the desired Kubernetes Version. EKS Anywhere currently supports 1.21 and 1.20
 ```