*.config: fix singularity cacheDir path for in2p3

src/nf_modules/samtools/sort_bams.config

src/nf_modules/samtools/split_bams.config

src/nf_modules/sratoolkit/fastqdump.config

src/nf_modules/star/indexing.config

src/nf_modules/star/mapping_paired.config

src/nf_modules/star/mapping_single.config

src/nf_modules/subread/subread.config

src/nf_modules/urqt/trimming_paired.config

src/nf_modules/urqt/trimming_single.config