ci: bump staticcheck@2025.1

Signed-off-by: Sebastien Binet <binet@cern.ch>

ci: bump staticcheck to v2024

Signed-off-by: Sebastien Binet <binet@cern.ch>

ci: drop Go-1.21, add Go-1.23

Signed-off-by: Sebastien Binet <binet@cern.ch>

all: bump x/net

Signed-off-by: Sebastien Binet <binet@cern.ch>

all: bump Go-1.20, update ci

Signed-off-by: Sebastien Binet <binet@cern.ch>

all: bump x/hep@v0.31.1 and gonum@v0.11.0

Signed-off-by: Sebastien Binet <binet@cern.ch>

roots: panics with more infos in Poly3

roots: add support n-th degree polynomial (n>4)

roots: first import of a roots-finding package

all: update CI+doc badges