Add explicit read permissions to workflows #202

Job	Run time
Static SDK / Construct Static SDK matrix	7s
Release builds / Construct release build matrix	4s
Unit tests / Construct unit test matrix	4s
Cxx interop / Construct Cxx interop matrix	4s
Soundness / Format check	50s
Soundness / Unacceptable language check	4s
Soundness / Shell check	42s
Soundness / Python lint check	8s
Soundness / License headers check	5s
Soundness / API breakage check	5m 10s
Soundness / Documentation check	3m 38s
Soundness / Broken symlinks check	5s
Soundness / YAML lint check	4s
Release builds / Release builds / Linux (6.1)	4m 7s
Release builds / Release builds / Linux (5.10)	3m 51s
Release builds / Release builds / Linux (nightly-next)	5m 24s
Release builds / Release builds / Linux (6.0)	4m 12s
Release builds / Release builds / Linux (nightly-main)	4m 56s
Release builds / Release builds / Linux (6.2)	4m 3s
Cxx interop / Cxx interop / Linux (6.1)	3m 16s
Cxx interop / Cxx interop / Linux (6.0)	3m 7s
Cxx interop / Cxx interop / Linux (6.2)	3m 10s
Cxx interop / Cxx interop / Linux (nightly-main)	4m 0s
Cxx interop / Cxx interop / Linux (nightly-next)	4m 35s
Cxx interop / Cxx interop / Linux (5.10)	2m 48s
Unit tests / Unit tests / Linux (5.10)	5m 19s
Unit tests / Unit tests / Linux (6.2)	5m 19s
Unit tests / Unit tests / Linux (nightly-main)	6m 18s
Unit tests / Unit tests / Linux (nightly-next)	6m 43s
Unit tests / Unit tests / Linux (6.0)	5m 47s
Unit tests / Unit tests / Linux (6.1)	5m 39s
Static SDK / Static SDK / Linux (latest-release Jammy)	3m 49s
Static SDK / Static SDK / Linux (main Jammy)	4m 33s
	1h 42m 1s

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