fix: Remove outdated libpython3.8-dev dep. #1705

Job	Run time
architectures	6s
architectures	6s
stable-release-trigger	0s
stable-release-trigger	0s
release-trigger	0s
release-trigger	0s
timestamp	1s
timestamp	1s
tags	1s
tags	1s
dev-generic	11m 18s
dev-generic	11m 18s
stable-releases	0s
stable-releases	0s
releases	0s
releases	0s
stable-git-tag	0s
stable-git-tag	0s
git-tag	0s
git-tag	0s
candidates (arc)	6m 32s
candidates (arc)	10m 31s
candidates (arc64)	6m 5s
candidates (arc64)	9m 12s
candidates (arm)	7m 51s
candidates (arm)	12m 15s
candidates (aarch64)	5m 57s
candidates (aarch64)	9m 9s
candidates (mips)	6m 5s
candidates (mips)	10m 16s
candidates (nios2)	6m 1s
candidates (nios2)	9m 15s
candidates (riscv64)	6m 58s
candidates (riscv64)	12m 19s
candidates (sparc)	6m 58s
candidates (sparc)	10m 26s
candidates (x86_64)	5m 59s
candidates (x86_64)	9m 21s
candidates (xtensa-espressif_esp32)	5m 53s
candidates (xtensa-espressif_esp32)	9m 4s
candidates (xtensa-espressif_esp32s2)	5m 59s
candidates (xtensa-espressif_esp32s2)	9m 34s
candidates (xtensa-espressif_esp32s3)	6m 1s
candidates (xtensa-espressif_esp32s3)	9m 8s
candidates (xtensa-intel_tgl_adsp)	6m 34s
candidates (xtensa-intel_tgl_adsp)	9m 45s
candidates (xtensa-intel_ace15_mtpm)	5m 59s
candidates (xtensa-intel_ace15_mtpm)	9m 55s
candidates (xtensa-mtk_mt8195_adsp)	6m 7s
candidates (xtensa-mtk_mt8195_adsp)	10m 9s
candidates (xtensa-nxp_imx8m_adsp)	6m 23s
candidates (xtensa-nxp_imx8m_adsp)	9m 10s
candidates (xtensa-nxp_imx_adsp)	6m 41s
candidates (xtensa-nxp_imx_adsp)	9m 6s
candidates (xtensa-sample_controller)	6m 11s
candidates (xtensa-sample_controller)	9m 9s
	5h 14m 50s

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