jobber: Point to latest commit

- Latest commit removes 'JOBBER_ARGS' env var in Dockerfile

library/jobber

@@ -2,7 +2,7 @@ Maintainers: C. Dylan Shearer <[email protected]> (@dshearer)
 GitRepo: https://github.com/dshearer/jobber-docker.git
 
 Tags: 1.4.0-alpine3.10, 1.4-alpine3.10, 1-alpine3.10, latest
-GitCommit: d261712ed0986a40dac9c7992d6f9367edf516f0
+GitCommit: 64d2a0778ae73986cb90f1c374d9dfb42c9b8483
 GitFetch: refs/heads/maint-1.4
 Directory: alpine3.10