Update for version 5.9.0

Author: willdollman

docs/cli/how-tos/fetch_sboms.mdx

@@ -7,15 +7,15 @@ To retrieve the SBOMs for a specific release, you can use the `src` command line
 1. Install `src` by following the [Quickstart](../quickstart.mdx).
 2. Install `cosign` by following the [Installation Guide](https://docs.sigstore.dev/cosign/system_config/installation/).
 3. Identify the version of Sourcegraph your require SBOMs for. This may be a [recent release](../../CHANGELOG.mdx), or your instance's current version.
-    1. SBOMs are only available for Sourcegraph release 5.8.1579 and later.
+    1. SBOMs are only available for Sourcegraph release 5.9.0 and later.
     2. Find your instance's current version by checking your deployment, or by visiting the Settings page on your Sourcegraph instance and checking the version shown in the bottom left corner.
     ![](https://storage.googleapis.com/sourcegraph-assets/docs/images/settings/view-version-scaled.png)
 4. Run `src sbom fetch -v <version>` to fetch SBOMs for all containers in this release. `src` will automatically validate that all SBOMs were signed by Sourcegraph.
     ```
-    # Fetch SBOMs for Sourcegraph release 5.8.1579
-    $ src sbom fetch -v 5.8.1579
+    # Fetch SBOMs for Sourcegraph release 5.9.0
+    $ src sbom fetch -v 5.9.0
 
-    Fetching SBOMs and validating signatures for all 55 images in the Sourcegraph 5.8.1579 release...
+    Fetching SBOMs and validating signatures for all 55 images in the Sourcegraph 5.9.0 release...
 
     ✅ sourcegraph/appliance
     ✅ sourcegraph/batcheshelper
@@ -25,7 +25,7 @@ To retrieve the SBOMs for a specific release, you can use the `src` command line
 
     🟢 Fetched verified SBOMs for 55 images
 
-    Fetched and validated SBOMs have been written to `sourcegraph-sboms/sourcegraph-5.8.1579`.
+    Fetched and validated SBOMs have been written to `sourcegraph-sboms/sourcegraph-5.9.0`.
 
     Your Sourcegraph deployment may not use all of these images. Please check your deployment to confirm which images are used.
     ```

docs/cli/how-tos/index.mdx

@@ -5,3 +5,5 @@ The following how-tos apply to the `src` command line interface to Sourcegraph:
 - [Creating an access token](/cli/how-tos/creating_an_access_token)
 - [Revoking an access token](/cli/how-tos/revoking_an_access_token)
 - [Managing access tokens](/cli/how-tos/managing_access_tokens)
+- [Fetch SBOMs](/cli/how-tos/fetch_sboms)
+