Replace string_to_string with char_lit_as_u8 in driver.sh

Author: smoelius

.github/driver.sh

@@ -47,9 +47,9 @@ unset CARGO_MANIFEST_DIR
 
 # Run a lint and make sure it produces the expected output. It's also expected to exit with code 1
 # FIXME: How to match the clippy invocation in compile-test.rs?
-./target/debug/clippy-driver -Dwarnings -Aunused -Zui-testing --emit metadata --crate-type bin tests/ui/string_to_string.rs 2>string_to_string.stderr && exit 1
-sed -e "/= help: for/d" string_to_string.stderr > normalized.stderr
-diff -u normalized.stderr tests/ui/string_to_string.stderr
+./target/debug/clippy-driver -Dwarnings -Aunused -Zui-testing --emit metadata --crate-type bin tests/ui/char_lit_as_u8.rs 2>char_lit_as_u8.stderr && exit 1
+sed -e "/= help: for/d" char_lit_as_u8.stderr > normalized.stderr
+diff -u normalized.stderr tests/ui/char_lit_as_u8.stderr
 
 # make sure "clippy-driver --rustc --arg" and "rustc --arg" behave the same
 SYSROOT=$(rustc --print sysroot)