upgrade to polkadot v1.3.0

[brenzi]

closes #250

design decision:

• Maintenance of node code is easier if we don't attempt to make service.rs generic. I think code redundancy is the lesser evil than maintenance effort here: we can simply copy-paste the template code and adjust two lines

• must re-run benchmarks

[clangenb]

Nice, looks good to me

[brenzi]

hmm, runtime-benchmark build works, but

cargo build --release --features runtime-benchmarks
./target/release/integritee-collator benchmark pallet --list --chain integritee-rococo-local-dev
Error: Input("Did not find the benchmarking metadata. This could mean that you either did not build the node correctly with the `--features runtime-benchmarks` flag, or the chain spec that you are using was not created by a node that was compiled with the flag: Other: Exported method Benchmark_benchmark_metadata is not found")

this here works, however:
./target/release/integritee-collator benchmark storage --chain integritee-rococo-local-dev --state-version 0

[brenzi]

for the sake of completeness, I tested that the parachain template in polkadot-sdk works correctly:

cargo build --release --features runtime-benchmarks -p parachain-template-node
./target/release/parachain-template-node benchmark pallet --list --chain dev

works as expected