Bump alpine base image version used to build tailscale/tailscale
and tailscale/k8s-operator images 3.16 -> 3.18
Updates #cleanup
Signed-off-by: Irbe Krumina <irbe@tailscale.com>
This updates all source files to use a new standard header for copyright
and license declaration. Notably, copyright no longer includes a date,
and we now use the standard SPDX-License-Identifier header.
This commit was done almost entirely mechanically with perl, and then
some minimal manual fixes.
Updates #6865
Signed-off-by: Will Norris <will@tailscale.com>
