chore: update bzlmod example

- set the bazel version rather than recommend 'floating' last green
- recommend enabling bzlmod in .bazelrc
- simplify 'try it' commands
- MODULE.bazel.lock files now produced since it's bazel 6.3

.bazelci/bzlmod.yml

@@ -7,24 +7,18 @@ tasks:
     name: "Depend on Bazel module"
     platform: ${{ all_platform }}
     working_directory: ../bzlmod/01-depend_on_bazel_module
-    build_flags:
-    - "--enable_bzlmod"
     build_targets:
     - "//:main"
   02-override_bazel_module:
     name: "Override Bazel module"
     platform: ${{ all_platform }}
     working_directory: ../bzlmod/02-override_bazel_module
-    build_flags:
-    - "--enable_bzlmod"
     build_targets:
     - "//:main"
   03-introduce_dependencies_with_module_extension:
     name: "Introduce dependencies with module extension"
     platform: ${{ all_platform }}
     working_directory: ../bzlmod/03-introduce_dependencies_with_module_extension
-    build_flags:
-    - "--enable_bzlmod"
     build_targets:
     - "//:city_count"
     - "//:emoji_count"
@@ -34,23 +28,17 @@ tasks:
     environment:
       MY_SHELL_BIN_PATH: /foo/bar/sh
     working_directory: ../bzlmod/04-local_config_and_register_toolchains
-    build_flags:
-    - "--enable_bzlmod"
     build_targets:
     - "//:get_sh_path"
   05-integrate_third_party_package_manager:
     name: "Integrate third party package manager"
     platform: ${{ all_platform }}
     working_directory: ../bzlmod/05-integrate_third_party_package_manager
-    build_flags:
-    - "--enable_bzlmod"
     build_targets:
     - "//:check_books"
   06-specify_dev_dependency:
     name: "Specify dev dependency"
     platform: ${{ all_platform }}
     working_directory: ../bzlmod/06-specify_dev_dependency
-    build_flags:
-    - "--enable_bzlmod"
     build_targets:
     - "//:check_books"

bzlmod/01-depend_on_bazel_module/.bazelrc

@@ -0,0 +1 @@
+common --enable_bzlmod

bzlmod/01-depend_on_bazel_module/.bazelversion

@@ -0,0 +1 @@
+6.3.0