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/build/analysis/importsort/BUILD.bazel b/build/analysis/importsort/BUILD.bazel
index 309edfb..06f0030 100644
--- a/build/analysis/importsort/BUILD.bazel
+++ b/build/analysis/importsort/BUILD.bazel
@@ -1,7 +1,7 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
 
 go_library(
-    name = "go_default_library",
+    name = "importsort",
     srcs = [
         "classify.go",
         "importsort.go",
@@ -9,16 +9,16 @@
     importpath = "source.monogon.dev/build/analysis/importsort",
     visibility = ["//visibility:public"],
     deps = [
-        "//build/analysis/lib:go_default_library",
-        "@org_golang_x_tools//go/analysis:go_default_library",
+        "//build/analysis/lib",
+        "@org_golang_x_tools//go/analysis",
     ],
 )
 
 go_test(
-    name = "go_default_test",
+    name = "importsort_test",
     srcs = ["importsort_test.go"],
     data = glob(["testdata/**"]),
-    embed = [":go_default_library"],
+    embed = [":importsort"],
     embedsrcs = [
         "testdata/README.md",
         "testdata/example.com/extlib/extlib.notgo",
@@ -32,7 +32,7 @@
         "testdata/source.monogon.dev/project/b/b.notgo",
     ],
     deps = [
-        "//build/toolbase/gotoolchain:go_default_library",
-        "@org_golang_x_tools//go/analysis/analysistest:go_default_library",
+        "//build/toolbase/gotoolchain",
+        "@org_golang_x_tools//go/analysis/analysistest",
     ],
 )