bump pg-client-hs version (fixes a build issue on some environments) (hasura#5267)

Author: 0x777

server/cabal.project

@@ -43,7 +43,7 @@ package graphql-engine
 source-repository-package
   type: git
   location: https://github.com/hasura/pg-client-hs.git
-  tag: cbfc69b935d19dc40be8cdcc73a70b81cf511d34
+  tag: 049015e042d107d8ededc943a64f7fabd3690a35
 
 source-repository-package
   type: git

server/commit_diff.txt

@@ -129,12 +129,6 @@ Date:   Thu Jul 2 17:27:09 2020 +0530
 
     server: unlock scheduled events on graceful shutdown (#4928)
 
-commit 9ccbd1c0f6b4816f954b1a9e0eef168625dbaecb
-Author: Vamshi Surabhi <[email protected]>
-Date:   Thu Jul 2 12:11:08 2020 +0530
-
-    bump pg-client-hs version (fixes a build issue on some environments) (#5267)
-
 commit d464208515ef6649bde5d7266fd783ad488dc859
 Merge: a78f17b7 cfffade1
 Author: Vamshi Surabhi <[email protected]>
@@ -150,18 +144,6 @@ Date:   Wed Jul 1 17:44:19 2020 +0530
 
     do not use prepared statements for mutations
 
-commit 2b0e3774a3fa00d23aa0e9ee9b43767b536ba54d
-Author: Brandon Simmons <[email protected]>
-Date:   Tue Jun 30 23:53:10 2020 -0400
-
-    5087 libpq pool leak (#5089)
-
-    Shrink libpq buffers to 1MB before returning connection to pool. Closes #5087
-
-    See: https://github.com/hasura/pg-client-hs/pull/19
-
-    Also related: #3388 #4077
-
 (Done, but we should re-visit this, if we do query plan caching)
 commit 20cbe9cfd3e90b91d3f4faf370b081fc3859cbde
 Author: Auke Booij <[email protected]>