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/nomination-pools/fuzzer/Cargo.toml

@@ -45,9 +45,7 @@ runtime-benchmarks = [
 	"pezsp-io/runtime-benchmarks",
 	"pezsp-runtime/runtime-benchmarks",
 ]
-std = [
-	"log/std",
-]
+std = ["log/std"]
 try-runtime = [
 	"pezframe-support/try-runtime",
 	"pezframe-system/try-runtime",

bizinikiwi/pezframe/nomination-pools/test-delegate-stake/Cargo.toml

@@ -60,10 +60,7 @@ runtime-benchmarks = [
 	"pezsp-runtime/runtime-benchmarks",
 	"pezsp-staking/runtime-benchmarks",
 ]
-std = [
-	"log/std",
-	"pezpallet-staking-reward-curve/std",
-]
+std = ["log/std", "pezpallet-staking-reward-curve/std"]
 try-runtime = [
 	"pezframe-election-provider-support/try-runtime",
 	"pezframe-support/try-runtime",