CI: remove contents: write permission #1734

Job	Run time
Action / 🎬 VHDL	1m 51s
Action / 🎬 eos-s3 \| btn_counter	2m 10s
Action / 🎬 Verilog	1m 47s
Action / 🎬 VHDL-plugin	1m 58s
Action / 🎬 arty_100 \| picosoc_demo	6m 31s
Action / 🎬 arty_35 \| counter_test	2m 54s
Pipeline / 🚦 SymbiFlow \| xc7	1m 3s
Pipeline / 📓 Docs	1m 3s
Pipeline / 🚦 SymbiFlow \| eos-s3	1m 53s
Pipeline / 🐍 Format	9s
Pipeline / 🚦 F4PGA \| xc7	2m 39s
Pipeline / Install	9s
Pipeline / 🚦 F4PGA \| eos-s3	2m 2s
Pipeline / 🚦 Lattice \| ice40	35s
Pipeline / Check license headers	14s
Pipeline / 🐍 Python Tests	1m 10s
Pipeline / 🐍 PYTHONPATH	3s
Automerge dependabot PRs	0s
	28m 11s

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