fix(recipe): change serde alias to rename

[alexandregv]

Motivation

See #750

alias only affects deserialization, rename affects both serialization and deserialization.

Old behavior

$ bluebuild generate -d -q ./recipes/recipe.yaml -o ./recipes/recipe.flat.yaml
$ grep image recipes/recipe.flat.yaml
base_image: ghcr.io/ublue-os/silverblue-main
image_version: '44'
$ bluebuild validate ./recipes/recipe.flat.yaml
ERROR => Failed:
  × Recipe ./recipes/recipe.flat.yaml failed to validate
  ╰─▶   × 3 errors encountered
         ╭─[./recipes/recipe.flat.yaml:1:1]
       1 │ name: my-recipe
         · ┬┬┬
         · ││╰── "image-version" is a required property
         · │╰── "base-image" is a required property
         · ╰── Additional properties are not allowed ('base_image', 'image_version' were unexpected)
       3 │ base_image: ghcr.io/ublue-os/silverblue-main
       4 │ image_version: '44'
         ╰────

New behavior

$ bluebuild generate -d -q ./recipes/recipe.yaml -o ./recipes/recipe.flat.yaml
$ grep image recipes/recipe.flat.yaml
base-image: ghcr.io/ublue-os/silverblue-main
image-version: '44'
$ bluebuild validate ./recipes/recipe.flat.yaml
$ bluebuild switch ./recipes/recipe.flat.yaml

Tests

test result: ok. 56 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s

     Running unittests src/bin/bluebuild.rs (target/debug/deps/bluebuild-c3cbb03b31652e2a)

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

   Doc-tests blue_build

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

Fix #750

[gmpinder]

Thanks for catching this!