feat(datasource/github-runners): Add ubuntu-22.04-arm and ubuntu-24.04-arm support

lib/modules/datasource/github-runners/index.spec.ts

@@ -21,6 +21,18 @@ describe('modules/datasource/github-runners/index', () => {
       });
     });
 
+    it('returns releases for Ubuntu ARM64', async () => {
+      const res = await getPkgReleases({
+        datasource: GithubRunnersDatasource.id,
+        packageName: 'ubuntu_arm64',
+      });
+
+      expect(res).toMatchObject({
+        releases: [{ version: '22.04' }, { version: '24.04' }],
+        sourceUrl: 'https://github.com/actions/runner-images',
+      });
+    });
+
     it('returns releases for macOS', async () => {
       const res = await getPkgReleases({
         datasource: GithubRunnersDatasource.id,

lib/modules/datasource/github-runners/index.ts

@@ -23,6 +23,7 @@ export class GithubRunnersDatasource extends Datasource {
       { version: '18.04', isDeprecated: true },
       { version: '16.04', isDeprecated: true },
     ],
+    ubuntu_arm64: [{ version: '24.04' }, { version: '22.04' }],
     macos: [
       { version: '15', isStable: false },
       { version: '15-large', isStable: false },
@@ -46,6 +47,13 @@ export class GithubRunnersDatasource extends Datasource {
     ],
   };
 
+  private static readonly supportsLatest: Record<string, boolean> = {
+    ubuntu: true,
+    ubuntu_arm64: false,
+    macos: true,
+    windows: true,
+  };
+
   public static isValidRunner(
     runnerName: string,
     runnerVersion: string,
@@ -59,7 +67,11 @@ export class GithubRunnersDatasource extends Datasource {
       ({ version }) => version === runnerVersion,
     );
 
-    return runnerVersion === 'latest' || versionExists;
+    return (
+      (runnerVersion === 'latest' &&
+        GithubRunnersDatasource.supportsLatest[runnerName]) ||
+      versionExists
+    );
   }
 
   override readonly defaultVersioning = dockerVersioningId;

lib/modules/datasource/github-runners/readme.md

@@ -1,7 +1,7 @@
 This datasource returns a list of all runners that are hosted by GitHub.
 The datasource is based on [GitHub's `runner-images` repository](https://github.com/actions/runner-images).
 
-Examples: `windows-2022` / `ubuntu-24.04` / `macos-14`
+Examples: `windows-2022` / `ubuntu-24.04` / `macos-14` / `ubuntu-24.04-arm`
 
 ## Maintenance
 

lib/modules/manager/github-actions/extract.spec.ts

@@ -30,6 +30,10 @@ jobs:
        labels: ubuntu-20.04-16core
   test10:
       runs-on: abc-123
+  test11:
+      runs-on: ubuntu-22.04-arm
+  test12:
+      runs-on: ubuntu-latest-arm
 `;
 
 describe('modules/manager/github-actions/extract', () => {
@@ -569,10 +573,18 @@ describe('modules/manager/github-actions/extract', () => {
           datasource: 'github-runners',
           autoReplaceStringTemplate: '{{depName}}-{{newValue}}',
         },
+        {
+          depName: 'ubuntu_arm64',
+          currentValue: '22.04',
+          replaceString: 'ubuntu-22.04-arm',
+          depType: 'github-runner',
+          datasource: 'github-runners',
+          autoReplaceStringTemplate: 'ubuntu-{{newValue}}-arm',
+        },
       ]);
       expect(
         res?.deps.filter((d) => d.datasource === 'github-runners'),
-      ).toHaveLength(7);
+      ).toHaveLength(8);
     });
   });
 });

lib/modules/manager/github-actions/extract.ts

@@ -157,7 +157,19 @@ function extractRunner(runner: string): PackageDependency | null {
     return null;
   }
 
-  const { depName, currentValue } = runnerVersionGroups;
+  let { depName, currentValue } = runnerVersionGroups;
+  let replaceString = `${depName}-${currentValue}`;
+  let autoReplaceStringTemplate = '{{depName}}-{{newValue}}';
+
+  const armVersionMatch = currentValue.match(
+    /^(?<version>[\\.A-Za-z0-9]+)-arm$/,
+  );
+  if (depName === 'ubuntu' && armVersionMatch) {
+    depName = 'ubuntu_arm64';
+    currentValue = armVersionMatch.groups?.version ?? currentValue;
+    replaceString = `ubuntu-${currentValue}-arm`;
+    autoReplaceStringTemplate = 'ubuntu-{{newValue}}-arm';
+  }
 
   if (!GithubRunnersDatasource.isValidRunner(depName, currentValue)) {
     return null;
@@ -166,10 +178,10 @@ function extractRunner(runner: string): PackageDependency | null {
   const dependency: PackageDependency = {
     depName,
     currentValue,
-    replaceString: `${depName}-${currentValue}`,
+    replaceString,
     depType: 'github-runner',
     datasource: GithubRunnersDatasource.id,
-    autoReplaceStringTemplate: '{{depName}}-{{newValue}}',
+    autoReplaceStringTemplate,
   };
 
   if (!dockerVersioning.api.isValid(currentValue)) {