Bump golang.org/x/net from 0.33.0 to 0.36.0 in /backend

Bumps [golang.org/x/net](https://github.com/golang/net) from 0.33.0 to 0.36.0.
- [Commits](https://github.com/golang/net/compare/v0.33.0...v0.36.0)

---
updated-dependencies:
- dependency-name: golang.org/x/net
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/ci-backend.yml

@@ -55,13 +55,13 @@ jobs:
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v6
         with:
-          version: v1.61.0
+          version: "v1.64.7"
           working-directory: backend/app
 
       - name: golangci-lint on example directory
         uses: golangci/golangci-lint-action@v6
         with:
-          version: v1.61.0
+          version: "v1.64.7"
           args: --config ../../.golangci.yml
           working-directory: backend/_example/memory_store