ci: don't retry timeout jobs

[ptrus]

Apparently jobs that hit the time-out limit exit with status -1 and get automatically retried (which we actually don't want). Haven't seen any other job fail with -1 (agents getting killed appears to be 125) so i think it's fine just not retrying these.

[codecov]

Codecov Report

Merging #2969 into master will decrease coverage by 0.22%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2969      +/-   ##
==========================================
- Coverage   68.55%   68.32%   -0.23%     
==========================================
  Files         361      361              
  Lines       35231    35231              
==========================================
- Hits        24151    24073      -78     
- Misses       7968     8052      +84     
+ Partials     3112     3106       -6     

Impacted Files	Coverage Δ
go/consensus/tendermint/apps/scheduler/query.go	71.05% <0.00%> (-7.90%)	⬇️
go/consensus/tendermint/apps/staking/query.go	49.09% <0.00%> (-7.28%)	⬇️
...ompute/txnscheduler/algorithm/batching/batching.go	78.66% <0.00%> (-6.67%)	⬇️
go/storage/metrics.go	81.52% <0.00%> (-6.53%)	⬇️
go/staking/api/grpc.go	52.61% <0.00%> (-6.21%)	⬇️
go/common/cbor/codec.go	78.37% <0.00%> (-5.41%)	⬇️
go/registry/api/grpc.go	35.16% <0.00%> (-4.90%)	⬇️
go/worker/storage/service_external.go	47.31% <0.00%> (-4.31%)	⬇️
go/runtime/committee/nodes.go	80.39% <0.00%> (-3.93%)	⬇️
go/storage/database/database.go	70.58% <0.00%> (-3.37%)	⬇️
... and 21 more

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