chore(deps): update go dependencies (non-major) (#40)

* chore(deps): update go dependencies (non-major)

* fix: regenerate code and add postUpgradeTasks for Renovate

Regenerate templ and sqlc output to match bumped tool versions.
Configure Renovate postUpgradeTasks to run 'go generate ./...' after
Go dependency updates, preventing stale generated files in future PRs.

---------

Co-authored-by: onion-4-dinner <15676555+onion-4-dinner@users.noreply.github.com>

.github/workflows/renovate.yml

@@ -20,6 +20,11 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      # Go is required for postUpgradeTasks (go generate runs templ + sqlc).
+      - uses: actions/setup-go@v5
+        with:
+          go-version: "1.25"
+
       - name: Run Renovate
         uses: renovatebot/github-action@v46.1.0
         with:
@@ -29,3 +34,5 @@ jobs:
           LOG_LEVEL: info
           RENOVATE_REPOSITORIES: ${{ github.repository }}
           RENOVATE_GIT_AUTHOR: "onion-4-dinner <15676555+onion-4-dinner@users.noreply.github.com>"
+          # Allow postUpgradeTasks commands defined in renovate.json5.
+          RENOVATE_ALLOW_POST_UPGRADE_COMMANDS: "true"