Upgrade rust/crates/futures-executor to 0.3.7

Test: make all rust crates
Change-Id: I0c14d33f6154f49e0ee69d07a1e299fb5dbe76c8
diff --git a/Cargo.toml.orig b/Cargo.toml.orig
index ad6aa34..579ee9a 100644
--- a/Cargo.toml.orig
+++ b/Cargo.toml.orig
@@ -1,12 +1,12 @@
 [package]
 name = "futures-executor"
 edition = "2018"
-version = "0.3.5"
+version = "0.3.7"
 authors = ["Alex Crichton <alex@alexcrichton.com>"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-lang/futures-rs"
 homepage = "https://rust-lang.github.io/futures-rs"
-documentation = "https://docs.rs/futures-executor/0.3.5"
+documentation = "https://docs.rs/futures-executor/0.3.7"
 description = """
 Executors for asynchronous tasks based on the futures-rs library.
 """
@@ -17,10 +17,11 @@
 thread-pool = ["std", "num_cpus"]
 
 [dependencies]
-futures-core = { path = "../futures-core", version = "0.3.5", default-features = false }
-futures-task = { path = "../futures-task", version = "0.3.5", default-features = false }
-futures-util = { path = "../futures-util", version = "0.3.5", default-features = false }
+futures-core = { path = "../futures-core", version = "0.3.7", default-features = false }
+futures-task = { path = "../futures-task", version = "0.3.7", default-features = false }
+futures-util = { path = "../futures-util", version = "0.3.7", default-features = false }
 num_cpus = { version = "1.8.0", optional = true }
 
 [package.metadata.docs.rs]
 all-features = true
+rustdoc-args = ["--cfg", "docsrs"]