remove gitbeaker node, update changeset

Signed-off-by: Johan Haals <johan.haals@gmail.com>

.changeset/light-dragons-crash.md

@@ -2,4 +2,12 @@
 '@backstage/create-app': patch
 ---
 
-Remove `@octokit/rest` from dependencies.
+Removed `@octokit/rest` and `@gitbeaker/node` from backend dependencies as these are unused in the default app.
+
+To apply these changes to your existing app, remove the following lines from the `dependencies` section of `packages/backend/package.json`
+
+```diff
+     "@backstage/plugin-techdocs-backend": "^1.0.0",
+-    "@gitbeaker/node": "^34.6.0",
+-    "@octokit/rest": "^18.5.3",
+```

packages/create-app/templates/default-app/packages/backend/package.json.hbs

@@ -35,7 +35,6 @@
     {{/if}}
     "@backstage/plugin-search-backend-node": "^{{version '@backstage/plugin-search-backend-node'}}",
     "@backstage/plugin-techdocs-backend": "^{{version '@backstage/plugin-techdocs-backend'}}",
-    "@gitbeaker/node": "^34.6.0",
     "dockerode": "^3.3.1",
     "express": "^4.17.1",
     "express-promise-router": "^4.1.0",