Prepare release for version 0.24.0 with updated specifications and metadata

[asiniscalchi]

PR Type

enhancement, tests

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Description

• Updated the runtime specification version in lib.rs and config.ts from 2390 to 2400.
• Bumped the package version in Cargo.toml from 0.23.90 to 0.24.0.
• Modified metadata in metadata15.golden to reflect the new version.

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Changes walkthrough 📝

	Relevant files
Enhancement	lib.rs Update runtime specification version                                          runtime/laos/src/lib.rs Updated spec_version from 2390 to 2400. +1/-1      Cargo.toml Bump package version to 0.24.0                                                      Cargo.toml Updated package version from 0.23.90 to 0.24.0. +1/-1      metadata15.golden Update metadata for new version                                                    runtime/laos/src/tests/metadata15.golden Updated a value from 86 to 96 in metadata. +1/-1
Tests	config.ts Update e2e test configuration for new spec version              e2e-tests/tests/config.ts Updated RUNTIME_SPEC_VERSION from 2390 to 2400. +1/-1

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[asiniscalchi]

/describe

[github-actions]

PR Description updated to latest commit (eb3c3b2)