Use bash from the environment instead of absolute path (bazelbuild#1660)

Not all operating systems ship with bash located at `/bin/bash`. Change
the interpreter to `/usr/bin/env bash` to request bash from the
environment.

Update dependency com_github_google_go_containerregistry to v0.1.1 (b…

…azelbuild#1532)

Co-authored-by: alex1545 <[email protected]>

update puller and loader binaries to pich up bazelbuild#1509 (bazelbu…

…ild#1517)

Co-authored-by: Suvanjan Mukherjee <[email protected]>
Co-authored-by: alex1545 <[email protected]>

Fix bug in image puller execution timeout (bazelbuild#1495)

* repository_ctx.execute must also receive 'timeout' value otherwise limit is default 600s

* make test test by updating expected err, and add note about potential test flakiness

fix repro tests (bazelbuild#1379)

update rules scala to pick up maven to https change (bazelbuild#1375)

* update rules scala to pick up maven to https change

* also update maven in this repo in this same PR

Update dependency bazel_toolchains to v1.2.4 (bazelbuild#1320)

Fix pip in py3_image (bazelbuild#1244)

Final fixes for mac using toolchains properly in py_binary target wit…

…h bazel head (bazelbuild#1191)

* fixing rules_docker with bazel head

* test with buildkite using last_green

* test with a different mac target

* buildify

* undo changes to presubmit

fix rules_docker with bazel head (bazelbuild#1182)

* fix rules_docker with bazel head

* fix on mac