bats: update git URLs

[tonistiigi]

Github has deprecated git protocol

[thaJeztah]

These known failures? or flaky?

#19 [test 2/2] RUN diff test.bats.output test.bats.golden
--- test.bats.output
+++ test.bats.golden
@@ -3,12 +3,12 @@
 # (from function `assert_equal' in file bats-assert/src/assert.bash, line 91,
 #  in test file test.bats, line 6)
 #   `assert_equal "foo" "bar"' failed
-#
+# 
 # -- values do not equal --
 # expected : bar
 # actual   : foo
 # --
-#
+# 
 not ok 2 run-no-success
 # (in test file test.bats, line 10)
 #   `run echo "start" && false' failed
@@ -18,14 +18,9 @@
 # (from function `assert_output' in file bats-assert/src/assert.bash, line 239,
 #  in test file test.bats, line 28)
 #   `assert_output "bcd"' failed
-#
+# 
 # -- output differs --
 # expected : bcd
 # actual   : abc
 # --
-#
-
-The following warnings were encountered during tests:
-BW01: `run`'s command `./foobar` exited with code 127, indicating 'Command not found'. Use run's return code checks, e.g. `run -127`, to fix this message.
-      (from function `run' in file /usr/lib/bats-core/test_functions.bash, line 297,
-       in test file test.bats, line 15)
+# 
 process "/bin/sh -c diff test.bats.output test.bats.golden" did not complete successfully: exit code: 1

[thaJeztah]

LGTM