chore: disable pprof on non-Linux targets (#2523)

pprof doesn't work on Windows. It's disabled in most of the Lance
libraries, except for two: lance-index and lance-io. This PR disables it
for those two in the same manner.

See also tikv/pprof-rs#9

Co-authored-by: Lei Xu <lei@lancedb.com>

rust/lance-index/Cargo.toml

@@ -60,14 +60,16 @@ clap = { workspace = true, features = ["derive"] }
 criterion.workspace = true
 lance-datagen.workspace = true
 lance-testing.workspace = true
-pprof.workspace = true
 tempfile.workspace = true
 datafusion-sql.workspace = true
 
 [build-dependencies]
 prost-build.workspace = true
 rustc_version.workspace = true
 
+[target.'cfg(target_os = "linux")'.dev-dependencies]
+pprof.workspace = true
+
 [[bench]]
 name = "find_partitions"
 harness = false

rust/lance-io/Cargo.toml

@@ -48,13 +48,15 @@ async-priority-channel = "0.2.0"
 [dev-dependencies]
 criterion.workspace = true
 parquet.workspace = true
-pprof.workspace = true
 tempfile.workspace = true
 mockall.workspace = true
 
 [build-dependencies]
 prost-build.workspace = true
 
+[target.'cfg(target_os = "linux")'.dev-dependencies]
+pprof.workspace = true
+
 [[bench]]
 name = "scheduler"
 harness = false