fix: adapt test to error changes

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

Author: mudler

pkg/utils/base64_test.go

@@ -26,7 +26,7 @@ var _ = Describe("utils/base64 tests", func() {
 		b64, err := GetContentURIAsBase64(input)
 		Expect(b64).To(Equal(""))
 		Expect(err).ToNot(BeNil())
-		Expect(err).To(MatchError("not valid string"))
+		Expect(err).To(MatchError("not valid base64 data type string"))
 	})
 	It("GetImageURLAsBase64 can actually download images and calculates something", func() {
 		// This test doesn't actually _check_ the results at this time, which is bad, but there wasn't a test at all before...