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/signer/Cargo.toml

@@ -110,7 +110,10 @@ zeroize = { workspace = true }
 
 # These are used if the pezkuwi-js-compat feature is enabled
 base64 = { workspace = true, optional = true, features = ["alloc"] }
-crypto_secretbox = { workspace = true, optional = true, features = ["alloc", "salsa20"] }
+crypto_secretbox = { workspace = true, optional = true, features = [
+	"alloc",
+	"salsa20",
+] }
 scrypt = { workspace = true, default-features = false, optional = true }
 serde = { workspace = true, optional = true }
 serde_json = { workspace = true, optional = true }