ci: compress debug symbols a bit more

.github/workflows/release.yml

@@ -118,6 +118,7 @@ jobs:
       - name: Prepare debug info
         run: |
           zip \
+            -9 \
             --quiet \
             --junk-paths \
             --recurse-patterns \

code/scripts/espurna_utils/build.py

@@ -10,7 +10,7 @@ from .version import app_full_version_for_env
 def app_add_extract_debug_symbols(env):
     def builder_generator(target, source, env, for_signature):
         return env.VerboseAction(
-            "$OBJCOPY --only-keep-debug $SOURCE $TARGET",
+            "$OBJCOPY --only-keep-debug --compress-debug-sections $SOURCE $TARGET",
             "Extracting debug symbols from $SOURCE",
         )