Drop support for Julia versions below v1.9 (JuliaApproximation#513)

Author: jishnub

.github/workflows/ci.yml

@@ -39,7 +39,6 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.6'
           - '1'
           - '~1.10.0-0'
         os:

.github/workflows/downstream.yml

@@ -31,7 +31,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        julia-version: ['1', '1.6']
+        julia-version: ['1']
         os: [ubuntu-latest]
         package:
           - {repo: ApproxFun.jl, group: JuliaApproximation}

Project.toml

@@ -1,6 +1,6 @@
 name = "ApproxFunBase"
 uuid = "fbd15aa5-315a-5a7d-a8a4-24992e37be05"
-version = "0.8.46"
+version = "0.9.0"
 
 [deps]
 AbstractFFTs = "621f4979-c628-5d54-868e-fcf4e3e8185c"
@@ -47,7 +47,7 @@ LazyArrays = "0.20, 0.21, 0.22, 1"
 LowRankMatrices = "1"
 SpecialFunctions = "0.10, 1.0, 2"
 StaticArrays = "0.12, 1.0"
-julia = "1.6"
+julia = "1.9"
 
 [extras]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"