Resolve "vestigial(?) dim_0 dimensions in the gridded glm output"

Closes #51 (via linking against the fix in glmtools via our buildbucket environment):

https://github.com/nbearson/glmtools/commit/b67b6fbbafb56ca7b51120a0b9b627c3c6712321

changed milestone to %CSPP Geo Gridded GLM 1.0

added Critical label

assigned to @nickb

added 1 commit

• 79198882 - Merge in Nick Bearson's CI Fix

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