[bazel] Bump the bazel version to fix a UI bug

See bazelbuild/bazel#13985

Signed-off-by: Miguel Young de la Sota <mcyoung@google.com>

.bazelversion

@@ -1 +1 @@
-4.2.0
+5.1.1

rules/cc_side_outputs.bzl

@@ -5,7 +5,7 @@
 """Aspects and rules for making cc_* libraries emit more outputs."""
 
 load("@rules_cc//cc:action_names.bzl", "ACTION_NAMES", "C_COMPILE_ACTION_NAME")
-load("//rules:bugfix.bzl", "find_cc_toolchain")
+load("@rules_cc//cc:find_cc_toolchain.bzl", "find_cc_toolchain")
 load("//rules:rv.bzl", "rv_rule")
 
 CcSideProductInfo = provider(fields = ["files"])
@@ -63,7 +63,7 @@ def _cc_compile_different_output(name, target, ctx, extension, flags, process_al
         )
     cc_compile_ctx = cc_info.compilation_context
 
-    cc_toolchain = find_cc_toolchain(ctx)
+    cc_toolchain = find_cc_toolchain(ctx).cc
     feature_configuration = cc_common.configure_features(
         ctx = ctx,
         cc_toolchain = cc_toolchain,
@@ -226,7 +226,7 @@ cc_asm_aspect = aspect(
 )
 
 def _cc_llvm_aspect_impl(target, ctx):
-    cc_toolchain = find_cc_toolchain(ctx)
+    cc_toolchain = find_cc_toolchain(ctx).cc
     if cc_toolchain.compiler.find("clang") == -1:
         return CcSideProductInfo(files = depset())
     return _cc_compile_different_output("LLVMOutput", target, ctx, "ll", ["-S", "-emit-llvm"])
@@ -273,7 +273,7 @@ def _cc_relink_with_linkmap_aspect_impl(target, ctx):
 
     output_file = ctx.actions.declare_file(target.label.name + ".ldmap")
 
-    cc_toolchain = find_cc_toolchain(ctx)
+    cc_toolchain = find_cc_toolchain(ctx).cc
     feature_configuration = cc_common.configure_features(
         ctx = ctx,
         cc_toolchain = cc_toolchain,

rules/opentitan.bzl

@@ -2,9 +2,7 @@
 # Licensed under the Apache License, Version 2.0, see LICENSE for details.
 # SPDX-License-Identifier: Apache-2.0
 
-# TODO(drewmacrae) this should be in rules_cc
-# pending resolution of https://github.com/bazelbuild/rules_cc/issues/75
-load("//rules:bugfix.bzl", "find_cc_toolchain")
+load("@rules_cc//cc:find_cc_toolchain.bzl", "find_cc_toolchain")
 load(
     "//rules:cc_side_outputs.bzl",
     "rv_asm",
@@ -43,7 +41,7 @@ PER_DEVICE_DEPS = {
 }
 
 def _obj_transform_impl(ctx):
-    cc_toolchain = find_cc_toolchain(ctx)
+    cc_toolchain = find_cc_toolchain(ctx).cc
     outputs = []
     for src in ctx.files.srcs:
         binary = ctx.actions.declare_file("{}.{}".format(src.basename, ctx.attr.suffix))
@@ -125,7 +123,7 @@ sign_bin = rv_rule(
 )
 
 def _elf_to_disassembly_impl(ctx):
-    cc_toolchain = find_cc_toolchain(ctx)
+    cc_toolchain = find_cc_toolchain(ctx).cc
     outputs = []
     for src in ctx.files.srcs:
         disassembly = ctx.actions.declare_file("{}.elf.s".format(src.basename))

rules/otbn.bzl

@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 load("//rules:rv.bzl", "rv_rule")
-load("//rules:bugfix.bzl", "find_cc_toolchain")
+load("@rules_cc//cc:find_cc_toolchain.bzl", "find_cc_toolchain")
 
 def _get_assembler(cc_toolchain):
     """Find the path to riscv-unknown-elf-as."""
@@ -20,7 +20,7 @@ def _otbn_assemble_sources(ctx):
     producing a corresponding object file. Returns a list of all object files
     that will be generated by these actions.
     """
-    cc_toolchain = find_cc_toolchain(ctx)
+    cc_toolchain = find_cc_toolchain(ctx).cc
     assembler = _get_assembler(cc_toolchain)
 
     objs = []
@@ -77,7 +77,7 @@ def _otbn_binary(ctx):
     We achieve by having `otbn_build.py` emit a conventional RV32I library
     that other rules can depend on in their `deps`.
     """
-    cc_toolchain = find_cc_toolchain(ctx)
+    cc_toolchain = find_cc_toolchain(ctx).cc
     assembler = _get_assembler(cc_toolchain)
 
     # Run the otbn assembler on source files to produce object (.o) files.