Update various crates' object and wast dependencies (#1908)

This somewhat cuts down on duplicate dependencies. `wast` is used in a much older version (`11.0.0`) by `witx`, and can be updated without issues there as well, but this at least gets us from 3 copies to 2.

crates/debug/Cargo.toml

@@ -14,7 +14,7 @@ edition = "2018"
 [dependencies]
 gimli = "0.21.0"
 wasmparser = "0.58.0"
-object = { version = "0.19", default-features = false, features = ["write"] }
+object = { version = "0.20", default-features = false, features = ["write"] }
 wasmtime-environ = { path = "../environ", version = "0.18.0" }
 target-lexicon = { version = "0.10.0", default-features = false }
 anyhow = "1.0"

crates/obj/Cargo.toml

@@ -13,7 +13,7 @@ edition = "2018"
 [dependencies]
 anyhow = "1.0"
 wasmtime-environ = { path = "../environ", version = "0.18.0" }
-object = { version = "0.19", default-features = false, features = ["write"] }
+object = { version = "0.20", default-features = false, features = ["write"] }
 more-asserts = "0.2.1"
 
 [badges]

crates/profiling/Cargo.toml

@@ -24,7 +24,7 @@ wasmtime-runtime = { path = "../runtime", version = "0.18.0" }
 ittapi-rs = { version = "0.1.5", optional = true }
 
 [dependencies.object]
-version = "0.19.0"
+version = "0.20.0"
 optional = true
 default-features = false
 features = ['read_core', 'elf', 'std']

crates/wast/Cargo.toml

@@ -13,7 +13,7 @@ edition = "2018"
 [dependencies]
 anyhow = "1.0.19"
 wasmtime = { path = "../wasmtime", version = "0.18.0", default-features = false }
-wast = "17.0.0"
+wast = "18.0.0"
 
 [badges]
 maintenance = { status = "actively-developed" }