only one dependabot PR

Author: JoshuaLampert

.github/dependabot.yml

@@ -5,3 +5,8 @@ updates:
     directory: "/" # Location of package manifests
     schedule:
       interval: "monthly"
+    groups:
+      # Group all GitHub Actions PRs into a single PR:
+      all-github-actions:
+        patterns:
+          - "*"

docs/make.jl

@@ -98,4 +98,6 @@ makedocs(;
 deploydocs(;
            repo = "github.com/NumericalMathematics/DispersiveShallowWater.jl",
            devbranch = "main",
-           push_preview = true)
+           push_preview = all(!isempty,
+                              (get(ENV, "GITHUB_TOKEN", ""),
+                               get(ENV, "DOCUMENTER_KEY", ""))))