Various build size optimizations

firmware/Cargo.lock

@@ -769,7 +769,6 @@ dependencies = [
  "base64",
  "cortex-m",
  "cortex-m-rt",
- "critical-section",
  "defmt 1.0.1",
  "defmt-rtt",
  "embassy-executor",
@@ -781,6 +780,7 @@ dependencies = [
  "embedded-graphics",
  "embedded-hal-bus",
  "epd-waveshare",
+ "panic-abort",
  "panic-probe",
  "postcard",
  "serde",
@@ -844,6 +844,12 @@ version = "1.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
 
+[[package]]
+name = "panic-abort"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e20e6499bbbc412f280b04a42346b356c6fa0753d5fd22b7bd752ff34c778ee"
+
 [[package]]
 name = "panic-probe"
 version = "1.0.0"