fix: incorrect npm_config_arch for ppc64le (#1547)

.github/workflows/insider-linux.yml

@@ -133,7 +133,7 @@ jobs:
           npm_arch: arm64
           image: vscodium/vscodium-linux-build-agent:buster-arm64
         - vscode_arch: pp64le
-          npm_arch: ppc64le
+          npm_arch: ppc64
           image: vscodium/vscodium-linux-build-agent:bionic-ppc64le
         - vscode_arch: armhf
           npm_arch: arm

.github/workflows/stable-linux.yml

@@ -133,7 +133,7 @@ jobs:
           npm_arch: arm
           image: vscodium/vscodium-linux-build-agent:buster-armhf
         - vscode_arch: ppc64le
-          npm_arch: ppc64le
+          npm_arch: ppc64
           image: vscodium/vscodium-linux-build-agent:bionic-ppc64le
     container:
       image: ${{ matrix.image }}