Bump `RecipesBase`

[skleinbo]

Plots.jl now depends on RecipesBase >= 1.0 which has created an incompatibility

(v1.3) pkg> add SymEngine@0.8
 Resolving package versions...
ERROR: Unsatisfiable requirements detected for package RecipesBase [3cdcf5f2]:
 RecipesBase [3cdcf5f2] log:
 ├─possible versions are: [0.4.0, 0.5.0, 0.6.0, 0.7.0, 0.8.0, 1.0.0-1.0.1] or uninstalled
 ├─restricted by compatibility requirements with RecursiveArrayTools [731186ca] to versions: [0.7.0, 0.8.0, 1.0.0-1.0.1]
 │ └─RecursiveArrayTools [731186ca] log:
 │   ├─possible versions are: [0.16.0-0.16.3, 0.17.0-0.17.2, 0.18.0-0.18.6, 0.19.0-0.19.1, 0.20.0, 1.0.0-1.0.2, 1.1.0-1.1.1, 1.2.0-1.2.1, 2.0.0-2.0.5, 2.1.0-2.1.2, 2.2.0, 2.3.0-2.3.1] or uninstalled
 │   └─restricted to versions 2.3.1 by an explicit requirement, leaving only versions 2.3.1
 ├─restricted by compatibility requirements with SymEngine [123dc426] to versions: [0.4.0, 0.5.0, 0.6.0, 0.7.0, 0.8.0], leaving only versions: [0.7.0, 0.8.0]
 │ └─SymEngine [123dc426] log:
 │   ├─possible versions are: [0.4.1-0.4.3, 0.5.0, 0.6.0, 0.7.0-0.7.1, 0.8.0-0.8.1] or uninstalled
 │   └─restricted to versions 0.8 by an explicit requirement, leaving only versions 0.8.0-0.8.1
 └─restricted by compatibility requirements with Plots [91a5bcdd] to versions: 1.0.0-1.0.1 — no versions left
   └─Plots [91a5bcdd] log:
     ├─possible versions are: [0.12.1-0.12.4, 0.13.0-0.13.1, 0.14.0-0.14.2, 0.15.0-0.15.1, 0.16.0, 0.17.0-0.17.4, 0.18.0, 0.19.0-0.19.3, 0.20.0-0.20.6, 0.21.0, 0.22.0-0.22.5, 0.23.0-0.23.2, 0.24.0, 0.25.0-0.25.3, 0.26.0-0.26.3, 0.27.0-0.27.1, 0.28.0-0.28.4, 0.29.0-0.29.9, 1.0.0-1.0.14, 1.1.0-1.1.4, 1.2.0-1.2.3] or uninstalled
     └─restricted to versions 1.0.14 by an explicit requirement, leaving only versions 1.0.14