Update Manage category Maturity July 2021

Why is this change being made?

Related to Product#2840 (comment 649847126)

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• Added a description to this MR explaining the reasons for the proposed change, per say-why-not-just-what
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---

data/categories.yml

@@ -19,7 +19,7 @@ subgroups:
   available: 2017-03-22
   viable: 2018-01-01
   complete: 2019-01-01
-  lovable: 2021-12-31
+  lovable: 2022-06-31
   maturity: complete
   dogfooding_status: Active
   dogfooding_issue: N/A
@@ -243,7 +243,7 @@ value_stream_management:
   roi: false
   available: 2017-01-01
   viable: 2020-10-22
-  complete: 2022-01-22
+  complete: 2022-07-22
   lovable: 2023-11-18
   maturity: viable
   dogfooding_status: Active