use path specifiers for workspace deps in dev-dependencies (#587)

See
https://github.com/MarcoIeni/release-plz/blob/main/crates/release_plz/Cargo.toml#L51-L53
for examples

Main point: if you have dev-dependencies, then you are compiling this
from a checkout, which means you don't need to resolve these from
crates.io

Our release automater, release-plz, doesn't order crates in
dev-dependencies before release, and we can resolve from path instead
for running benches

encodings/zigzag/Cargo.toml

@@ -20,7 +20,7 @@ vortex-scalar = { workspace = true }
 zigzag = { workspace = true }
 
 [dev-dependencies]
-vortex-fastlanes = { workspace = true }
+vortex-fastlanes = { path = "../fastlanes" }
 
 [lints]
 workspace = true

vortex-serde/Cargo.toml

@@ -41,9 +41,9 @@ futures-executor = { workspace = true }
 rand = { workspace = true }
 simplelog = { workspace = true }
 tokio = { workspace = true, features = ["full"] }
-vortex-alp = { workspace = true }
-vortex-fastlanes = { workspace = true }
-vortex-sampling-compressor = { workspace = true }
+vortex-alp = { path = "../encodings/alp" }
+vortex-fastlanes = { path = "../encodings/fastlanes" }
+vortex-sampling-compressor = { path = "../vortex-sampling-compressor" }
 
 [lints]
 workspace = true