Update gas prices based on benchmarks on hpc7a

[immortal-tofu]

Here the raw benchmarks on hpc7a

    benchmarks_test.go:42: and8 in 21.143698ms => 30000
    benchmarks_test.go:42: and16 in 22.125934ms => 31000
    benchmarks_test.go:42: and32 in 24.170654ms => 34000
    benchmarks_test.go:42: eq8 in 36.326295ms => 51000
    benchmarks_test.go:42: eq16 in 38.692888ms => 55000
    benchmarks_test.go:42: eq32 in 58.292808ms => 83000
    benchmarks_test.go:42: ScalarEq8 in 35.21361ms => 50000
    benchmarks_test.go:42: ScalarEq16 in 37.363632ms => 53000
    benchmarks_test.go:42: ScalarEq32 in 39.800014ms => 56000
    benchmarks_test.go:42: shr8 in 152.739262ms => 218000
    benchmarks_test.go:42: shr16 in 191.582471ms => 273000
    benchmarks_test.go:42: shr32 in 234.625112ms => 335000
    benchmarks_test.go:42: ScalarShr8 in 94.572995ms => 135000
    benchmarks_test.go:42: ScalarShr16 in 112.860578ms => 161000
    benchmarks_test.go:42: ScalarShr32 in 132.264398ms => 188000
    benchmarks_test.go:42: min8 in 151.052623ms => 215000
    benchmarks_test.go:42: min16 in 190.704772ms => 272000
    benchmarks_test.go:42: min32 in 232.669845ms => 332000
    benchmarks_test.go:42: ScalarMin8 in 91.77278ms => 131000
    benchmarks_test.go:42: ScalarMin16 in 111.876571ms => 159000
    benchmarks_test.go:42: ScalarMin32 in 132.630337ms => 189000
    benchmarks_test.go:42: add8 in 76.412519ms => 109000
    benchmarks_test.go:42: add16 in 97.260445ms => 138000
    benchmarks_test.go:42: add32 in 120.681062ms => 172000
    benchmarks_test.go:42: ScalarAdd8 in 70.201021ms => 100000
    benchmarks_test.go:42: ScalarAdd16 in 95.447686ms => 136000
    benchmarks_test.go:42: ScalarAdd32 in 117.421947ms => 167000
    benchmarks_test.go:42: sub8 in 73.732867ms => 105000
    benchmarks_test.go:42: sub16 in 97.510986ms => 139000
    benchmarks_test.go:42: sub32 in 121.021967ms => 172000
    benchmarks_test.go:42: ScalarSub8 in 72.724336ms => 103000
    benchmarks_test.go:42: ScalarSub16 in 94.672753ms => 135000
    benchmarks_test.go:42: ScalarSub32 in 117.869454ms => 168000
    benchmarks_test.go:42: mul8 in 130.182512ms => 185000
    benchmarks_test.go:42: mul16 in 176.784066ms => 252000
    benchmarks_test.go:42: mul32 in 252.799735ms => 361000
    benchmarks_test.go:42: ScalarMul8 in 89.700283ms => 128000
    benchmarks_test.go:42: ScalarMul16 in 92.705605ms => 132000
    benchmarks_test.go:42: ScalarMul32 in 117.668837ms => 168000
    benchmarks_test.go:42: ScalarDiv8 in 149.751403ms => 213000
    benchmarks_test.go:42: ScalarDiv16 in 271.742097ms => 388000
    benchmarks_test.go:42: ScalarDiv32 in 237.610672ms => 339000
    benchmarks_test.go:42: IfThenElse8 in 38.806488ms => 55000
    benchmarks_test.go:42: IfThenElse16 in 42.468405ms => 60000
    benchmarks_test.go:42: IfThenElse32 in 46.059083ms => 65000
    ```

[dartdart26]

Looks good!