test: fix failed tests

Author: yh-sb

tests/snapshots/ui__ui_test_err_decompress_missing_extension_without_rar-1.snap

@@ -2,12 +2,13 @@
 source: tests/ui.rs
 expression: "run_ouch(\"ouch decompress a\", dir)"
 ---
+[WARNING] Received a file with name 'a', but a was expected as the extension
 [ERROR] Cannot decompress files
  - Files with missing extensions: <TMP_DIR>/a
  - Decompression formats are detected automatically from file extension
 
-hint: Supported extensions are: tar, zip, bz, bz2, bz3, gz, lz4, xz, lzma, lz, sz, zst, 7z
+hint: Supported extensions are: tar, zip, bz, bz2, bz3, gz, lz4, xz, lzma, lz, sz, zst, 7z, a, deb
 hint: Supported aliases are: tgz, tbz, tlz4, txz, tlzma, tsz, tzst, tlz, cbt, cbz, cb7, cbr
-hint: 
+hint:
 hint: Alternatively, you can pass an extension to the '--format' flag:
 hint:   ouch decompress <TMP_DIR>/a --format tar.gz

tests/snapshots/ui__ui_test_err_format_flag_without_rar-1.snap

@@ -5,9 +5,9 @@ expression: "run_ouch(\"ouch compress input output --format tar.gz.unknown\", di
 [ERROR] Failed to parse `--format tar.gz.unknown`
  - Unsupported extension 'unknown'
 
-hint: Supported extensions are: tar, zip, bz, bz2, bz3, gz, lz4, xz, lzma, lz, sz, zst, 7z
+hint: Supported extensions are: tar, zip, bz, bz2, bz3, gz, lz4, xz, lzma, lz, sz, zst, 7z, a, deb
 hint: Supported aliases are: tgz, tbz, tlz4, txz, tlzma, tsz, tzst, tlz, cbt, cbz, cb7, cbr
-hint: 
+hint:
 hint: Examples:
 hint:   --format tar
 hint:   --format gz