feat: update all go modules and add a command to bump modules

.devcontainer/bin/bump-modules

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+pushd /root/go/src/github.com/dokku/dokku/plugins/ >/dev/null || exit 1
+for plugin in *; do
+  if [[ ! -f "/root/go/src/github.com/dokku/dokku/plugins/$plugin/go.mod" ]]; then continue; fi
+  echo "$plugin"
+  pushd /root/go/src/github.com/dokku/dokku/plugins/$plugin || exit 1
+  go mod tidy
+  go mod download
+  popd >/dev/null || exit 1
+done
+popd >/dev/null || exit 1