fix: quick-checks CI failures - taplo format, zepter, umbrella

1. TOML format (taplo): 123 files reformatted using correct config
   - Command: taplo format --config .config/taplo.toml

2. Zepter feature propagation fix:
   - pezframe-support: added pezsp-timestamp/try-runtime to try-runtime feature

3. generate-umbrella.py bug fix:
   - Script crashed when Cargo.toml/src didn't exist in umbrella dir
   - Added existence checks before deletion

vendor/pezkuwi-subxt/utils/strip-metadata/Cargo.toml

@@ -30,10 +30,5 @@ default-features = true
 workspace = true
 
 [features]
-std = [
-	"codec/std",
-	"either/std",
-	"frame-metadata/std",
-	"scale-info/std",
-]
+std = ["codec/std", "either/std", "frame-metadata/std", "scale-info/std"]
 serde = []