Bump vscode/devcontainers/go from 1.18 to 1.19 in /.devcontainer (#46)

Bumps vscode/devcontainers/go from 1.18 to 1.19.

---
updated-dependencies:
- dependency-name: vscode/devcontainers/go
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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.devcontainer/Dockerfile

@@ -1,7 +1,7 @@
 ARG HADOLINT_VERSION=2.4.1
 FROM hadolint/hadolint:${HADOLINT_VERSION}-alpine as hadolint
 
-FROM mcr.microsoft.com/vscode/devcontainers/go:1.18
+FROM mcr.microsoft.com/vscode/devcontainers/go:1.19
 
 RUN go install github.com/ahmetb/govvv@v0.3.0 && go install github.com/go-delve/delve/cmd/dlv@master