Report all target validation fails not just the first #390

Job	Run time
all-integration-tests	0s
Build Spin (windows-latest)	24m 40s
Build Spin static (aarch64, aarch64-unknown-linux-musl)	16m 49s
Build Spin Ubuntu	22m 49s
Build Spin (macos-13)	12m 48s
Build Spin static (amd64, x86_64-unknown-linux-musl)	16m 6s
Build Spin (macos-14)	9m 21s
Review new dependencies for known vulnerabilities	0s
Lint Rust	9m 17s
Run release build steps (ubuntu-20.04, amd64, --features openssl/vendored, target/release)	15m 49s
Test Spin (ubuntu-22.04-4core-spin)	1s
Run release build steps (ubuntu-20.04, aarch64, --features openssl/vendored --target aarch64-unkn...	17m 18s
Test Spin (macos-14)	20m 43s
Run release build steps (macos-13, amd64, target/release)	18m 0s
Run release build steps (macos-14, aarch64, target/release)	12m 28s
Run release build steps (windows-latest, amd64, .exe, target/release)	30m 5s
	3h 46m 14s

Provide feedback