net-runner: Use 0.1.0 for default fixture.default.runtime.version

[matevz]

Use 0.1.0 instead of 1.0.0 for consistency with runtime tests and initial tutorial code.

[codecov]

Codecov Report

Merging #4816 (30117e5) into master (bce059b) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4816      +/-   ##
==========================================
- Coverage   66.87%   66.86%   -0.01%     
==========================================
  Files         451      451              
  Lines       50260    50260              
==========================================
- Hits        33609    33606       -3     
- Misses      12487    12490       +3     
  Partials     4164     4164              

Impacted Files	Coverage Δ
...onsensus/tendermint/apps/beacon/state/state_vrf.go	73.33% <0.00%> (-13.34%)	⬇️
go/worker/storage/committee/utils.go	92.30% <0.00%> (-7.70%)	⬇️
go/worker/storage/p2p/sync/client.go	86.95% <0.00%> (-4.35%)	⬇️
go/worker/compute/executor/committee/p2p.go	75.00% <0.00%> (-4.17%)	⬇️
go/common/workerpool/workerpool.go	78.46% <0.00%> (-3.08%)	⬇️
go/worker/storage/committee/node.go	77.02% <0.00%> (-1.79%)	⬇️
go/worker/client/service.go	70.58% <0.00%> (-1.31%)	⬇️
go/consensus/tendermint/apps/beacon/backend_vrf.go	58.89% <0.00%> (-0.85%)	⬇️
go/consensus/tendermint/beacon/beacon.go	73.80% <0.00%> (-0.48%)	⬇️
go/worker/storage/committee/checkpoint_sync.go	66.10% <0.00%> (-0.43%)	⬇️
... and 9 more

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