feat(gomod): enable gomodUpdateImportPaths for gopkg.in (#20743)

lib/modules/manager/gomod/artifacts.spec.ts

@@ -1625,7 +1625,7 @@ describe('modules/manager/gomod/artifacts', () => {
     ]);
   });
 
-  it('skips updating import paths for gopkg.in dependencies', async () => {
+  it('updates import paths for gopkg.in dependencies including v0 to v1', async () => {
     fs.readLocalFile.mockResolvedValueOnce('Current go.sum');
     fs.readLocalFile.mockResolvedValueOnce(null); // vendor modules filename
     const execSnapshots = mockExecAll();
@@ -1640,7 +1640,10 @@ describe('modules/manager/gomod/artifacts', () => {
     expect(
       await gomod.updateArtifacts({
         packageFileName: 'go.mod',
-        updatedDeps: [{ depName: 'gopkg.in/yaml.v2', newVersion: 'v28.0.0' }],
+        updatedDeps: [
+          { depName: 'gopkg.in/yaml.v2', newVersion: 'v28.0.0' },
+          { depName: 'gopkg.in/foo.v0', newVersion: 'v1.0.0' },
+        ],
         newPackageFileContent: gomod1,
         config: {
           ...config,
@@ -1657,6 +1660,18 @@ describe('modules/manager/gomod/artifacts', () => {
         cmd: 'go get -d -t ./...',
         options: { cwd: '/tmp/github/some/repo' },
       },
+      {
+        cmd: 'go install github.com/marwan-at-work/mod/cmd/mod@latest',
+        options: { cwd: '/tmp/github/some/repo' },
+      },
+      {
+        cmd: 'mod upgrade --mod-name=gopkg.in/yaml.v2 -t=28',
+        options: { cwd: '/tmp/github/some/repo' },
+      },
+      {
+        cmd: 'mod upgrade --mod-name=gopkg.in/foo.v0 -t=1',
+        options: { cwd: '/tmp/github/some/repo' },
+      },
       {
         cmd: 'go mod tidy',
         options: { cwd: '/tmp/github/some/repo' },

lib/modules/manager/gomod/artifacts.ts

@@ -134,9 +134,9 @@ function getUpdateImportPathCmds(
       depName: depName!,
       newMajor: major(newVersion!),
     }))
-    // Skip path upates going from v0 to v1
+    // Skip path updates going from v0 to v1
     .filter(
-      ({ depName, newMajor }) => !depName.startsWith('gopkg.in') && newMajor > 1
+      ({ depName, newMajor }) => depName.startsWith('gopkg.in') || newMajor > 1
     )
 
     .map(