deps: update oapi-codegen to v2

The oapi-codegen libraries went through a reorganization; the
repositories for the oapi-codegen build tool was separated from the
runtime libraries.
In our go.mod / go_deps.bzl, oapi-codegen build tool no longer shows up.
Instead, we explicitly need to require it, in a new macro rules_openapi_dependencies().

Aside; fix `cfg = "exec"` for the oapi-codegen buildtool so that this
tool is built for the environment of the builder, not the target
platform.

WORKSPACE

@@ -288,6 +288,10 @@ nodejs_register_toolchains(
     node_version = DEFAULT_NODE_VERSION,
 )
 
+load("//rules_openapi:deps.bzl", "rules_openapi_dependencies")
+
+rules_openapi_dependencies()
+
 load("@aspect_rules_js//npm:npm_import.bzl", "npm_translate_lock")
 
 npm_translate_lock(

control/mgmtapi/BUILD.bazel

@@ -42,10 +42,9 @@ go_library(
         "//private/mgmtapi/segments/api:go_default_library",
         "//private/storage:go_default_library",
         "//private/storage/beacon:go_default_library",
-        "@com_github_deepmap_oapi_codegen//pkg/runtime:go_default_library",  # keep
         "@com_github_getkin_kin_openapi//openapi3:go_default_library",  # keep
         "@com_github_go_chi_chi_v5//:go_default_library",  # keep
-        "@com_github_pkg_errors//:go_default_library",  # keep
+        "@com_github_oapi_codegen_runtime//:go_default_library",  # keep
         "@org_golang_google_protobuf//proto:go_default_library",
     ],
 )