go.mod: bump golang.org/x/text from 0.12.0 to 0.13.0 #269

Job	Run time
CI matrix / Assert PR branch is ahead	3s
Makefile / Assert PR branch is ahead	9s
CI matrix / Run tests (go-ci-oldstable, false)	49s
CI matrix / Run tests (go-ci-stable, false)	50s
CI matrix / Run tests (go-ci-unstable, true)	43s
CI matrix / Build codebase (go-ci-oldstable, false)	45s
CI matrix / Build codebase (go-ci-stable, false)	42s
CI matrix / Build codebase (go-ci-unstable, true)	44s
CI matrix / Lint codebase (go-ci-oldstable, false)	51s
CI matrix / Lint codebase (go-ci-stable, false)	1m 9s
CI matrix / Lint codebase (go-ci-unstable, true)	52s
CI matrix / Optional Linting / Assert PR branch is ahead	4s
Makefile / Lint codebase using Makefile	0s
Makefile / Build codebase using Makefile quick recipe	48s
Makefile / Build codebase using Makefile all recipe	0s
CI matrix / Optional Linting / Lint codebase using optional linters	0s
	8m 29s

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