Fix render_nanomaps action (#21151)

* Fix render_nanomaps action

Use up-to-date VM and updated SpacemanDMM with modified source

* Revert changes to SpacemanDMM/nanomap-renderer

Note that during map generation this will cause errors in the form of:
```
error: #error Your version of BYOND is too out-of-date to compile this project. Go to https://secure.byond.com/download and update.
error: #error You need version 514.1554 or higher
```

.github/workflows/render_nanomaps.yml

@@ -18,14 +18,13 @@ jobs:
       contents: write  # for Git to git push
       pull-requests: write  # for repo-sync/pull-request to create pull requests
     name: 'Generate NanoMaps'
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-22.04
     steps:
     - name: 'Update Branch'
       uses: actions/checkout@v3
 
     - name: Branch
       run: |
-        git fetch origin
         git branch -f nanomap-render
         git checkout nanomap-render
         git reset --hard origin/master
@@ -50,4 +49,3 @@ jobs:
         pr_body: "This pull request updates the server NanoMaps. Please review the diff images before merging."
         pr_label: "NanoMaps"
         pr_allow_empty: false
-        github_token: ${{ secrets.GITHUB_TOKEN }}