Per upstream suggestion, back out PR 8164 instead of adding regex-syntax

Signed-off-by: Michel Alexandre Salim <salimma@fedoraproject.org>

below-common-fix-metadata.diff

@@ -1,5 +1,5 @@
 --- below-common-0.6.3/Cargo.toml	1970-01-01T00:00:01+00:00
-+++ below-common-0.6.3/Cargo.toml	2023-01-18T16:43:18.137715+00:00
++++ below-common-0.6.3/Cargo.toml	2023-01-18T18:12:10.289873+00:00
 @@ -35,7 +35,7 @@
  default-features = false
  
@@ -9,13 +9,15 @@
  features = ["crossterm-backend"]
  default-features = false
  
-@@ -53,6 +53,9 @@
- ]
- default-features = false
+@@ -47,11 +47,6 @@
+ 
+ [dependencies.regex]
+ version = "1.5.4"
+-features = [
+-    "std",
+-    "unicode-perl",
+-]
+-default-features = false
  
-+[dependencies.regex-syntax]
-+version = "0.6"
-+
  [dependencies.slog]
  version = "2.7"
- features = [

rust-below-common.spec

@@ -14,7 +14,7 @@ URL:            https://crates.io/crates/below-common
 Source:         %{crates_source}
 # Manually created patch for downstream crate metadata changes
 # - bump cursive to 0.20
-# - explicitly require regex-syntax
+# - restore use of regex default features (back out https://github.com/facebookincubator/below/pull/8164)
 Patch:          below-common-fix-metadata.diff
 
 BuildRequires:  rust-packaging >= 21