fix wasm build

Author: sfackler

.github/workflows/ci.yml

@@ -73,6 +73,8 @@ jobs:
           path: target
           key: check-wasm32-target-${{ runner.os }}-${{ steps.rust-version.outputs.version }}-${{ hashFiles('Cargo.lock') }}
       - run: cargo check --target wasm32-unknown-unknown --manifest-path tokio-postgres/Cargo.toml --no-default-features --features js
+        env:
+          RUSTFLAGS: --cfg getrandom_backend="wasm_js"
 
   test:
     name: test

postgres-protocol/Cargo.toml

@@ -10,7 +10,7 @@ readme = "../README.md"
 
 [features]
 default = []
-js = ["getrandom/js"]
+js = ["getrandom/wasm_js"]
 
 [dependencies]
 base64 = "0.22"