Remove std's transitive dependency on cfg-if 0.1

After rust-lang/rust#101946 this completes the move to cfg-if 1.0 by:
* Updating getrandom 0.1.14->0.1.16
* Updating panic_abort, panic_unwind, and unwind to cfg-if 1.0

Author: chbaker0

panic_abort/Cargo.toml

@@ -13,7 +13,7 @@ doc = false
 
 [dependencies]
 alloc = { path = "../alloc" }
-cfg-if = { version = "0.1.8", features = ['rustc-dep-of-std'] }
+cfg-if = { version = "1.0", features = ['rustc-dep-of-std'] }
 core = { path = "../core" }
 libc = { version = "0.2", default-features = false }
 compiler_builtins = "0.1.0"

panic_unwind/Cargo.toml

@@ -17,4 +17,4 @@ core = { path = "../core" }
 libc = { version = "0.2", default-features = false }
 unwind = { path = "../unwind" }
 compiler_builtins = "0.1.0"
-cfg-if = "0.1.8"
+cfg-if = "1.0"

unwind/Cargo.toml

@@ -17,7 +17,7 @@ doc = false
 core = { path = "../core" }
 libc = { version = "0.2.79", features = ['rustc-dep-of-std'], default-features = false }
 compiler_builtins = "0.1.0"
-cfg-if = "0.1.8"
+cfg-if = "1.0"
 
 [build-dependencies]
 cc = "1.0.69"