Use newest Julia v1 in BuildDocs.yml

Forgot that current lts release doesn't support `[sources]` in Project.toml

Signed-off-by: abhro <[email protected]>

Author: abhro

.github/workflows/BuildDocs.yml

@@ -9,7 +9,7 @@ jobs:
       - uses: actions/checkout@v5
       - uses: julia-actions/setup-julia@v2
         with:
-          version: 'lts'
+          version: '1'
       - name: Install dependencies
         shell: julia --project=docs/ --color=yes {0}
         run: using Pkg; Pkg.instantiate()