Franklin.jl + GH Pages deployment fail : ERROR: TypeError: in typeassert, expected VersionNumber, got a value of type Pkg.Types.VersionSpec

[SimonCoste]

Hello,
I am using Franklin for my personnal website, it is hosted through GitHub pages.
I recently pushed some changes, but the deployment failed. Here is the output :

Run julia -e ' using Pkg; Pkg.activate("."); Pkg.instantiate(); using NodeJS; run($(npm_cmd()) install highlight.js); using Franklin; optimize()'
Activating environment at ~/work/SimonCoste.github.io/SimonCoste.github.io/Project.toml
Installing known registries into ~/.julia

                                                                       0.2%

###################################### 53.2%
######################################################################## 100.0%
Added registry General to ~/.julia/registries/General
ERROR: TypeError: in typeassert, expected VersionNumber, got a value of type Pkg.Types.VersionSpec
Stacktrace:
[1] load_urls(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.5/Pkg/src/Operations.jl:510
[2] #download_source#54 at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.5/Pkg/src/Operations.jl:686 [inlined]
[3] download_source at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.5/Pkg/src/Operations.jl:685 [inlined]
[4] instantiate(::Pkg.Types.Context; manifest::Nothing, update_registry::Bool, verbose::Bool, platform::Pkg.BinaryPlatforms.Linux, kwargs::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}) at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.5/Pkg/src/API.jl:875
[5] instantiate(::Pkg.Types.Context) at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.5/Pkg/src/API.jl:795
[6] #instantiate#169 at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.5/Pkg/src/API.jl:791 [inlined]
[7] instantiate() at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.5/Pkg/src/API.jl:791
[8] top-level scope at none:1
Error: Process completed with exit code 1.

I think this might be linked with the fact that I recently upgraded my Julia version on my computer, from <1.5 to 1.6.2.
How can I overcome this ?

[fredrikekre]

I think this might be linked with the fact that I recently upgraded my Julia version on my computer, from <1.5 to 1.6.2.

Probably, and now you try to run a 1.6 manifest with 1.5: https://github.com/SimonCoste/SimonCoste.github.io/blob/c3ddc644f134f1833cbf9b56abc898bb143bf492/.github/workflows/Deploy.yml#L26

[SimonCoste]

Thanks for your answer, Fredrik. I manually updated the deploy.yml file and the deployment worked.
Do you know if there is a way to automate this ?