golangci-lint: remove Dockerfile.golangci-lint and update renovate config #5675

Job	Run time
Build tetragon	9m 48s
Test kernel 4.19-20240130.071936 / test group 0	21m 43s
Test kernel 5.10-20240130.071936 / test group 0	27m 26s
Test kernel 5.15-20240130.071936 / test group 0	27m 52s
Test kernel 5.4-20240130.071936 / test group 0	26m 30s
Test kernel 6.1-20240130.071936 / test group 0	20m 32s
Test kernel 6.6-20240130.071936 / test group 0	20m 54s
Test kernel bpf-next-20240130.071936 / test group 0	20m 24s
post-test	3s
	2h 55m 12s

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