make specifying `workspace = false` a hard error #2423

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Job	Run time
Build binary (Windows)	2m 50s
Semver: core-graphics	42s
Check lint and rustfmt	13s
Build binary	42s
Run tests (1.74, false)	1m 47s
Check if version changed	7s
Run tests (1.75, false)	2m 0s
Run tests (1.76, false)	1m 58s
Run tests (1.77, false)	1m 43s
Run tests (1.78, false)	1m 48s
Run tests (stable, false)	1m 43s
Run tests (beta, false)	1m 47s
Run tests (nightly, true)	4m 48s
Semver: libp2p-dcutr 1.62.0 and libp2p-relay 0.14.0	1m 16s
Caching with feature config changed	59s
Semver: libp2p-core 0.37.0	1m 44s
Caching across rustdoc versions	1m 28s
Semver: bevy_core v0.9.0	39s
Semver: bevy_gltf v0.9.1	51s
Semver: libp2p-gossipsub ~0.44.0 + libp2p-request-response ~0.24.0	1m 35s
Semver: clap v3.2.0	48s
Semver: libp2p-uds 0.37.0	47s
Semver: sqllogictest v0.13.0	42s
Semver: tokio ~v1.25.0 (implicit)	34s
Semver: tokio ~v1.25.0 (explicit)	56s
Check failure when installed rustc is too old	16s
Semver: dependency has warnings with "-Dwarnings" (libp2p v0.53.1)	1m 0s
Semver: perf-event-open-sys2 v5.0.0	31s
Semver: ref-slice fork (git)	32s
Semver: ref-slice fork (sparse)	16s
Semver: ref-slice fork (Windows) (git)	1m 13s
Semver: ref-slice fork (Windows) (sparse)	1m 17s
All CI stages	1s
Check for semver compliance	0s
Run the release workflow	0s
	39m 33s

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