treewide: switch to gomod and bump everything

This switches version resolution from fietsje to gomod and updates
all Go dependencies. It also bumps rules_go (required by gVisor) and
switches the Gazelle naming convention from go_default_xxx to the
standard Bazel convention of the default target having the package
name.

Since Kubernetes dropped upstream Bazel support and doesn't check in
all generated files I manually pregenerated the OpenAPI spec. This
should be fixed, but because of the already-huge scope of this CL
and the rebase complexity this is not in here.

Change-Id: Iec8ea613d06946882426c2f9fad5bda7e8aaf833
Reviewed-on: https://review.monogon.dev/c/monogon/+/639
Reviewed-by: Sergiusz Bazanski <serge@monogon.tech>
Reviewed-by: Leopold Schabel <leo@nexantic.com>
diff --git a/metropolis/pkg/erofs/BUILD.bazel b/metropolis/pkg/erofs/BUILD.bazel
index af484a8..ce1622c 100644
--- a/metropolis/pkg/erofs/BUILD.bazel
+++ b/metropolis/pkg/erofs/BUILD.bazel
@@ -2,7 +2,7 @@
 load("//metropolis/test/ktest:ktest.bzl", "ktest")
 
 go_library(
-    name = "go_default_library",
+    name = "erofs",
     srcs = [
         "compression.go",
         "defs.go",
@@ -12,26 +12,26 @@
     ],
     importpath = "source.monogon.dev/metropolis/pkg/erofs",
     visibility = ["//visibility:public"],
-    deps = ["@org_golang_x_sys//unix:go_default_library"],
+    deps = ["@org_golang_x_sys//unix"],
 )
 
 go_test(
-    name = "go_default_test",
+    name = "erofs_test",
     srcs = [
         "compression_test.go",
         "defs_test.go",
         "erofs_test.go",
     ],
-    embed = [":go_default_library"],
+    embed = [":erofs"],
     pure = "on",  # keep
     deps = [
-        "@com_github_stretchr_testify//assert:go_default_library",
-        "@com_github_stretchr_testify//require:go_default_library",
-        "@org_golang_x_sys//unix:go_default_library",
+        "@com_github_stretchr_testify//assert",
+        "@com_github_stretchr_testify//require",
+        "@org_golang_x_sys//unix",
     ],
 )
 
 ktest(
     cmdline = "ramdisk_size=128",
-    tester = ":go_default_test",
+    tester = ":erofs_test",
 )