Don't use Zstandard bundles on Windows

In testing, gzip performs better than Zstandard on Windows.

.github/workflows/__zstd-bundle-fallback.yml

@@ -29,8 +29,6 @@ jobs:
         include:
           - os: macos-latest
             version: linked
-          - os: windows-latest
-            version: linked
           - os: ubuntu-latest
             version: linked
     name: Zstandard bundle fallback

.github/workflows/__zstd-bundle.yml

@@ -29,8 +29,6 @@ jobs:
         include:
           - os: macos-latest
             version: linked
-          - os: windows-latest
-            version: linked
           - os: ubuntu-latest
             version: linked
     name: Zstandard bundle

lib/setup-codeql.js

@@ -553,7 +553,10 @@ function sanitizeUrlForStatusReport(url) {
         : "sanitized-value";
 }
 async function useZstdBundle(cliVersion, features, tarSupportsZstd) {
-    return (tarSupportsZstd &&
+    return (
+    // In testing, gzip performs better than zstd on Windows.
+    process.platform !== "win32" &&
+        tarSupportsZstd &&
         semver.gte(cliVersion, feature_flags_1.CODEQL_VERSION_ZSTD_BUNDLE) &&
         !!(await features.getValue(feature_flags_1.Feature.ZstdBundle)));
 }

pr-checks/checks/zstd-bundle-fallback.yml

@@ -4,7 +4,6 @@ versions:
   - linked
 operatingSystems:
   - macos
-  - windows
   - ubuntu
 env:
   CODEQL_ACTION_ZSTD_BUNDLE: true

pr-checks/checks/zstd-bundle.yml

@@ -4,7 +4,6 @@ versions:
   - linked
 operatingSystems:
   - macos
-  - windows
   - ubuntu
 env:
   CODEQL_ACTION_ZSTD_BUNDLE: true

src/setup-codeql.ts

@@ -823,6 +823,8 @@ async function useZstdBundle(
   tarSupportsZstd: boolean,
 ): Promise<boolean> {
   return (
+    // In testing, gzip performs better than zstd on Windows.
+    process.platform !== "win32" &&
     tarSupportsZstd &&
     semver.gte(cliVersion, CODEQL_VERSION_ZSTD_BUNDLE) &&
     !!(await features.getValue(Feature.ZstdBundle))