test: Update panics for Rust 1.91

Author: epage

tests/custom-panic/tests/integration.rs

@@ -32,7 +32,7 @@ fn debug() {
         .assert()
         .stderr_eq(snapbox::str![[r#"
 
-thread 'main' panicked at tests/custom-panic/src/main.rs:11:5:
+thread 'main' ([..]) panicked at tests/custom-panic/src/main.rs:11:5:
 OMG EVERYTHING IS ON FIRE!!!
 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
 

tests/single-panic/tests/integration.rs

@@ -81,7 +81,7 @@ fn debug() {
         .assert()
         .stderr_eq(snapbox::str![[r#"
 
-thread 'main' panicked at tests/single-panic/src/main.rs:[..]:
+thread 'main' ([..]) panicked at tests/single-panic/src/main.rs:[..]:
 OMG EVERYTHING IS ON FIRE!!!
 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace