CI: mark and close PRs with formality issues #27008

Job	Run time
Test Formalities / Test Formalities	19s
Add formality check labels	5s
Feeds Package Test Build / Test aarch64_generic	9m 14s
Feeds Package Test Build / Test arm_cortex-a9_vfpv3-d16	8m 27s
Feeds Package Test Build / Test arm_cortex-a15_neon-vfpv4	9m 11s
Feeds Package Test Build / Test mipsel_24kc	9m 33s
Feeds Package Test Build / Test i386_pentium-mmx	8m 52s
Feeds Package Test Build / Test mips_24kc	9m 16s
Feeds Package Test Build / Test riscv64_generic	8m 26s
Feeds Package Test Build / Test x86_64	7m 49s
Feeds Package Test Build / Test powerpc_8548	8m 29s
Feeds Package Test Build / Test powerpc_464fp	8m 24s
	1h 28m 5s

Provide feedback