app-shells/bash: Uprev bash.

This uprevs bash so we can get a new prebuilt bash binary
using the new (8.0) version of readline.

BUG=chromium:1148160
TEST=None

Change-Id: I3ce5fae0aa4bef8ff1f201dc0985e1cec386f1ca
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2533727
Auto-Submit: Caroline Tice <cmtice@chromium.org>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
Tested-by: Manoj Gupta <manojgupta@chromium.org>
Tested-by: Caroline Tice <cmtice@chromium.org>
Commit-Queue: Caroline Tice <cmtice@chromium.org>
diff --git a/app-shells/bash/bash-4.3_p48-r3.ebuild b/app-shells/bash/bash-4.3_p48-r4.ebuild
similarity index 100%
rename from app-shells/bash/bash-4.3_p48-r3.ebuild
rename to app-shells/bash/bash-4.3_p48-r4.ebuild