Handle [cpan] versions that aren't returned as strings (#5239)

services/cpan/cpan-version.tester.js

@@ -8,6 +8,21 @@ t.create('version (valid)').get('/Config-Augeas.json').expectBadge({
   message: isVPlusDottedVersionAtLeastOne,
 })
 
+t.create('version (version is a number rather than a string)')
+  .get('/Config-Augeas.json')
+  .intercept(nock =>
+    nock('https://fastapi.metacpan.org')
+      .get('/v1/release/Config-Augeas')
+      .reply(200, {
+        license: ['GPL'],
+        version: 0.88,
+      })
+  )
+  .expectBadge({
+    label: 'cpan',
+    message: 'v0.88',
+  })
+
 t.create('version (not found)').get('/not-a-package.json').expectBadge({
   label: 'cpan',
   message: 'not found',

services/cpan/cpan.js

@@ -4,7 +4,7 @@ const Joi = require('@hapi/joi')
 const { BaseJsonService } = require('..')
 
 const schema = Joi.object({
-  version: Joi.string().required(),
+  version: Joi.alternatives(Joi.string().required(), Joi.number().required()),
   license: Joi.array().items(Joi.string()).min(1).required(),
 }).required()