Merge pull request #2087 from albinahlback/update_ci #2839

Job	Run time
GCC build regression check (no tests)	56s
Ubuntu GCC, Code Coverage (x10)	24m 58s
Ubuntu GCC with NTL (assert, x2)	8m 2s
Alpine Linux, musl, 32-bit (assert, x1.5)	13m 57s
macOS-M1, Clang (x3)	8m 26s
macOS-x86 Clang with BLAS (x2)	27m 26s
MinGW GCC (x0.5)	11m 24s
MSVC (x1)	9m 9s
Nemo.jl	11m 47s
Ubuntu Clang with examples (x5)	13m 11s
	2h 9m 16s

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