chore: bump hosts to 0.4.0

The host crates ship breaking changes (log format v2, flush and
set_wall_clock, the tines::serve signature, tines-core 1) that can't go
out as the already-released 0.3.0 (1.0 review S13). tines-core stays
1.0.0.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Cargo.lock

@@ -1462,7 +1462,7 @@ dependencies = [
 
 [[package]]
 name = "tines"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "heapless 0.8.0",
  "postcard",
@@ -1475,7 +1475,7 @@ dependencies = [
 
 [[package]]
 name = "tines-bt"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "bluer",
  "futures",
@@ -1497,7 +1497,7 @@ dependencies = [
 
 [[package]]
 name = "tines-ros2"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "rclrs",
  "ros-env",
@@ -1509,7 +1509,7 @@ dependencies = [
 
 [[package]]
 name = "tines-sim"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "proptest",
  "rand 0.8.8",
@@ -1518,7 +1518,7 @@ dependencies = [
 
 [[package]]
 name = "tines-store"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "postcard",
  "serde",