Update sl container for sl7 to current (build-date=20210324)
@@ -7,4 +7,4 @@ Tags: 7, latest
Architectures: amd64
GitFetch: refs/heads/7
Directory: sl7
-GitCommit: c979c33461aaa5803aafd51a30fe972ed8acadd5
+GitCommit: d08a5279313e97009ee2cc97eb13ba4a77f4d969
yosifkit