Bump Treasury version

[kszarek]

Changelog:

• Bumps golang from 1.11-alpine to 1.12.6-alpine Bump golang from 1.11-alpine to 1.12.6-alpine #48
• Bump github.com/aws/aws-sdk-go from 1.16.2 to 1.19.49 Bump github.com/aws/aws-sdk-go from 1.16.2 to 1.19.49 #47
• Bump github.com/spf13/cobra from 0.0.3 to 0.0.5 Bump github.com/spf13/cobra from 0.0.3 to 0.0.5 #43

bats tests:

bats test/bats/tests.bats
 ✓ Check that the treasury binary is available
 ✓ usage
 ✓ help
 ✓ write
 ✓ write second
 ✓ write second not forced
 ✓ write second forced
 ✓ write-wrong-data
 ✓ write random key
 ✓ read
 ✓ read-with-valid-region
 ✓ read-with-wrong-region
 ✓ read-wrong-data
 ✓ export single
 ✓ export all
 ✓ import forced
 ✓ read imported key3
 ✓ read imported key4
 ✓ template
 ✓ template-and-var-append
 ✓ template-and-var-append-multiple-variables
 ✓ template-and-var-append-bad-input
 ✓ template wrong key
 ✓ check version

24 tests, 0 failures