Update postgres

Changes:

- https://github.com/docker-library/postgres/commit/17c71ae: Update architecture detection to be more thorough
- https://github.com/docker-library/postgres/commit/137fcce: Update to 12.2-2.pgdg100+1
- https://github.com/docker-library/postgres/commit/71d4ab5: Update to 12.2-2.pgdg100+1
- https://github.com/docker-library/postgres/commit/f08d426: Update to 12.2-2.pgdg100+1

library/postgres

@@ -6,7 +6,7 @@ GitRepo: https://github.com/docker-library/postgres.git
 
 Tags: 12.2, 12, latest
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 33bccfcaddd0679f55ee1028c012d26cd196537d
+GitCommit: 17c71aef1940ef0d2cc8bdc8bf7fb0a2856c8326
 Directory: 12
 
 Tags: 12.2-alpine, 12-alpine, alpine
@@ -16,7 +16,7 @@ Directory: 12/alpine
 
 Tags: 11.7, 11
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 33bccfcaddd0679f55ee1028c012d26cd196537d
+GitCommit: 17c71aef1940ef0d2cc8bdc8bf7fb0a2856c8326
 Directory: 11
 
 Tags: 11.7-alpine, 11-alpine
@@ -26,7 +26,7 @@ Directory: 11/alpine
 
 Tags: 10.12, 10
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 33bccfcaddd0679f55ee1028c012d26cd196537d
+GitCommit: 17c71aef1940ef0d2cc8bdc8bf7fb0a2856c8326
 Directory: 10
 
 Tags: 10.12-alpine, 10-alpine
@@ -36,7 +36,7 @@ Directory: 10/alpine
 
 Tags: 9.6.17, 9.6, 9
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 33bccfcaddd0679f55ee1028c012d26cd196537d
+GitCommit: 17c71aef1940ef0d2cc8bdc8bf7fb0a2856c8326
 Directory: 9.6
 
 Tags: 9.6.17-alpine, 9.6-alpine, 9-alpine
@@ -46,7 +46,7 @@ Directory: 9.6/alpine
 
 Tags: 9.5.21, 9.5
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 33bccfcaddd0679f55ee1028c012d26cd196537d
+GitCommit: 17c71aef1940ef0d2cc8bdc8bf7fb0a2856c8326
 Directory: 9.5
 
 Tags: 9.5.21-alpine, 9.5-alpine