[infra] Add light gcc bots

No-Try: true
Bug: v8:13005
Change-Id: I940d78696885f94afee8b6222b439227b22a3ea5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3751209
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Liviu Rau <liviurau@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81588}

infra/mb/mb_config.pyl

@@ -117,6 +117,7 @@
           'release_simulate_arm64_pointer_compression',
       'V8 Linux64 gcc - builder': 'release_x64_gcc',
       'V8 Linux64 gcc - debug builder': 'debug_x64_gcc',
+      'V8 Linux64 gcc light - debug builder': 'debug_x64_gcc',
       'V8 Fuchsia - builder': 'release_x64_fuchsia',
       'V8 Fuchsia - debug builder': 'debug_x64_fuchsia',
       'V8 Linux64 - cfi - builder': 'release_x64_cfi',
@@ -230,6 +231,7 @@
       'v8_linux64_gc_stress_custom_snapshot_dbg_ng': 'debug_x64_trybot_custom',
       'v8_linux64_gcc_compile_dbg': 'debug_x64_gcc',
       'v8_linux64_gcc_compile_rel': 'release_x64_gcc',
+      'v8_linux64_gcc_light_compile_dbg': 'debug_x64_gcc',
       'v8_linux64_gcc_rel_ng': 'release_x64_gcc',
       'v8_linux64_gcov_coverage': 'release_x64_gcc_coverage',
       'v8_linux64_header_includes_dbg': 'debug_x64_header_includes',