Fix initial issues found by bazel 7

Bazel 7 is more strict about a copule of things.  We can fix those
without issue in bazel 6, so let's do that to make the big upgrade
step smaller.

Change-Id: If7bf12ad88cb29730f01944d72b120fe0cf88634
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/.bazelrc b/.bazelrc
index 61ac856..1febc54 100644
--- a/.bazelrc
+++ b/.bazelrc
@@ -81,7 +81,6 @@
 test --test_output=errors --test_timeout=-1,-1,-1,5500
 
 build --sandbox_base=/dev/shm/
-build --experimental_multi_threaded_digest
 
 build --sandbox_fake_hostname=true
 build --sandbox_fake_username=true
@@ -93,10 +92,12 @@
 # Switch to SHA256 for compatibility with distributed caching.
 startup --host_jvm_args=-Dbazel.DigestFunction=SHA256
 
-build --spawn_strategy=linux-sandbox
+build --spawn_strategy=sandboxed
 build --sandbox_default_allow_network=false
 
-build --strategy=TsProject=linux-sandbox
+build --strategy=TsProject=sandboxed
+build --strategy=CopyFile=standalone
+build --strategy=CopyDirectory=standalone
 
 # Use our hermetic JDK.
 # Note that this doesn't quite work fully, but it should. See