Bump Bazel version

[cpovirk]

We're currently on 5.4.1:

• bazel-common/.github/workflows/ci.yml

  Line 17 in fe1e4be

  USE_BAZEL_VERSION: '5.4.1'

• bazel-common/.bazelversion

  Line 1 in fe1e4be

  5.4.1

A naive attempt to bump to 7.2.1 leads to errors:

$ ./run_tests.sh # hacked up to run `bazelisk` instead of `bazel`
2024/08/13 13:19:21 Downloading https://releases.bazel.build/7.2.1/release/bazel-7.2.1-linux-x86_64...
Starting local Bazel server and connecting to it...
WARNING: --enable_bzlmod is set, but no MODULE.bazel file was found at the workspace root. Bazel will create an empty MODULE.bazel file. Please consider migrating your external dependencies from WORKSPACE to MODULE.bazel. For more details, please refer to https://github.com/bazelbuild/bazel/issues/18958.
ERROR: no such package '@@bazel_tools//platforms': BUILD file not found in directory 'platforms' of external repository @@bazel_tools. Add a BUILD file to a directory to mark it as a package.
ERROR: /usr/local/google/home/cpovirk/.cache/bazel/_bazel_cpovirk/8e2f63206b10e96a1bf6067cd12cdf5c/external/bazel_skylib/toolchains/unittest/BUILD:22:10: no such package '@@bazel_tools//platforms': BUILD file not found in directory 'platforms' of external repository @@bazel_tools. Add a BUILD file to a directory to mark it as a package. and referenced by '@@bazel_skylib//toolchains/unittest:cmd_toolchain'
ERROR: /usr/local/google/home/cpovirk/clients/bazel-common-gray/bazel-common/build_test/BUILD:1:13: Analysis failed
ERROR: Analysis of target '//build_test:build_test' failed; build aborted
INFO: Elapsed time: 6.584s, Critical Path: 0.03s
INFO: 1 process: 1 internal.
ERROR: Build did NOT complete successfully
ERROR: no such package '@@bazel_tools//platforms': BUILD file not found in directory 'platforms' of external repository @@bazel_tools. Add a BUILD file to a directory to mark it as a package.
ERROR: /usr/local/google/home/cpovirk/.cache/bazel/_bazel_cpovirk/8e2f63206b10e96a1bf6067cd12cdf5c/external/bazel_skylib/toolchains/unittest/BUILD:22:10: no such package '@@bazel_tools//platforms': BUILD file not found in directory 'platforms' of external repository @@bazel_tools. Add a BUILD file to a directory to mark it as a package. and referenced by '@@bazel_skylib//toolchains/unittest:cmd_toolchain'
ERROR: /usr/local/google/home/cpovirk/clients/bazel-common-gray/bazel-common/tools/maven/BUILD:20:15: Analysis failed
Use --verbose_failures to see the command lines of failed build steps.
ERROR: Analysis of target '//tools/maven:TransitiveExports' failed; build aborted
INFO: Elapsed time: 0.604s, Critical Path: 0.01s
INFO: 1 process: 1 internal.
ERROR: Build did NOT complete successfully
ERROR: No test targets were found, yet testing was requested

[cpovirk]

More trouble with newer versions documented in google/flogger#387