Update dependency alpine to v3.15

renovate-bot · renovate-bot · commit 59da201a22ac · 2022-03-07T14:02:31.000Z
diff --git a/5.1/alpine3.6/Dockerfile b/5.1/alpine3.6/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.13
+FROM alpine:3.15
 
 ENTRYPOINT ["lua"]
 
diff --git a/5.2/alpine3.6/Dockerfile b/5.2/alpine3.6/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.13
+FROM alpine:3.15
 
 ENTRYPOINT ["lua"]
 
diff --git a/5.3/alpine3.6/Dockerfile b/5.3/alpine3.6/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.13
+FROM alpine:3.15
 
 ENTRYPOINT ["lua"]
 
