Add defaultTestVersions constant

Author: mbg

pr-checks/sync.ts

@@ -55,6 +55,30 @@ interface Specification {
   collection?: string;
 }
 
+// The default set of CodeQL Bundle versions to use for the PR checks.
+const defaultTestVersions = [
+  // The oldest supported CodeQL version. If bumping, update `CODEQL_MINIMUM_VERSION` in `codeql.ts`
+  "stable-v2.17.6",
+  // The last CodeQL release in the 2.18 series.
+  "stable-v2.18.4",
+  // The last CodeQL release in the 2.19 series.
+  "stable-v2.19.4",
+  // The last CodeQL release in the 2.20 series.
+  "stable-v2.20.7",
+  // The last CodeQL release in the 2.21 series.
+  "stable-v2.21.4",
+  // The last CodeQL release in the 2.22 series.
+  "stable-v2.22.4",
+  // The default version of CodeQL for Dotcom, as determined by feature flags.
+  "default",
+  // The version of CodeQL shipped with the Action in `defaults.json`. During the release process
+  // for a new CodeQL release, there will be a period of time during which this will be newer than
+  // the default version on Dotcom.
+  "linked",
+  // A nightly build directly from the our private repo, built in the last 24 hours.
+  "nightly-latest",
+];
+
 const THIS_DIR = __dirname;
 const CHECKS_DIR = path.join(THIS_DIR, "checks");
 const OUTPUT_DIR = path.join(THIS_DIR, "new-output");