fix(gomod): use plural for additional dependencies notice (#29361)

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

@@ -91,7 +91,7 @@ describe('modules/manager/gomod/artifacts-extra', () => {
       expect(res).toBeNull();
     });
 
-    it('returns a notice when there are extra dependencies', () => {
+    it('returns a notice when there is an extra dependency', () => {
       const excludeDeps = ['go', 'github.com/foo/foo'];
 
       const res = getExtraDepsNotice(goModBefore, goModAfter, excludeDeps);
@@ -112,6 +112,28 @@ describe('modules/manager/gomod/artifacts-extra', () => {
       );
     });
 
+    it('returns a notice when there are extra dependencies', () => {
+      const excludeDeps = ['go'];
+
+      const res = getExtraDepsNotice(goModBefore, goModAfter, excludeDeps);
+
+      expect(res).toEqual(
+        [
+          'In order to perform the update(s) described in the table above, Renovate ran the `go get` command, which resulted in the following additional change(s):',
+          '',
+          '',
+          '- 2 additional dependencies were updated',
+          '',
+          '',
+          'Details:',
+          '| **Package**          | **Change**           |',
+          '| :------------------- | :------------------- |',
+          '| `github.com/foo/foo` | `v1.0.0` -> `v1.1.1` |',
+          '| `github.com/bar/bar` | `v2.0.0` -> `v2.2.2` |',
+        ].join('\n'),
+      );
+    });
+
     it('adds special notice for updated `go` version', () => {
       const excludeDeps = ['github.com/foo/foo'];
 

lib/modules/manager/gomod/artifacts-extra.ts

@@ -94,8 +94,12 @@ export function getExtraDepsNotice(
   const goUpdated = extraDeps.some(({ depName }) => depName === 'go');
   const otherDepsCount = extraDeps.length - (goUpdated ? 1 : 0);
 
-  if (otherDepsCount > 0) {
+  if (otherDepsCount === 1) {
     noticeLines.push(`- ${otherDepsCount} additional dependency was updated`);
+  } else if (otherDepsCount > 1) {
+    noticeLines.push(
+      `- ${otherDepsCount} additional dependencies were updated`,
+    );
   }
 
   if (goUpdated) {