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

bizinikiwi/pezframe/contracts/fixtures/Cargo.toml

@@ -32,9 +32,6 @@ runtime-benchmarks = [
 	"pezsp-runtime/runtime-benchmarks",
 ]
 std = []
-try-runtime = [
-	"pezframe-system/try-runtime",
-	"pezsp-runtime/try-runtime",
-]
+try-runtime = ["pezframe-system/try-runtime", "pezsp-runtime/try-runtime"]
 serde = []
 experimental = []

bizinikiwi/pezframe/contracts/uapi/Cargo.toml

@@ -27,8 +27,5 @@ scale-info = { features = ["derive"], optional = true, workspace = true }
 [features]
 default = ["scale"]
 scale = ["dep:codec", "scale-info"]
-std = [
-	"codec?/std",
-	"scale-info?/std",
-]
+std = ["codec?/std", "scale-info?/std"]
 serde = []