data/reports: add vulnerable_at to GO-2021-0061.yaml

Aliases: CVE-2021-4235

Updates golang/vulndb#61

Change-Id: I9f6d1d0ab1703d62148ed22a8898f9c677873691
Reviewed-on: https://go-review.googlesource.com/c/vulndb/+/462615
Run-TryBot: Tatiana Bradley <tatiana@golang.org>
Reviewed-by: Tatiana Bradley <tatiana@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Tatiana Bradley <tatiana@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
diff --git a/data/reports/GO-2021-0061.yaml b/data/reports/GO-2021-0061.yaml
index b06ad09..ad4ec26 100644
--- a/data/reports/GO-2021-0061.yaml
+++ b/data/reports/GO-2021-0061.yaml
@@ -2,6 +2,7 @@
   - module: gopkg.in/yaml.v2
     versions:
       - fixed: 2.2.3
+    vulnerable_at: 2.2.2
     packages:
       - package: gopkg.in/yaml.v2
         symbols:
@@ -11,6 +12,7 @@
           - Unmarshal
           - UnmarshalStrict
   - module: github.com/go-yaml/yaml
+    vulnerable_at: 2.1.0+incompatible
     packages:
       - package: github.com/go-yaml/yaml
         symbols: