fix: escape quotes in DOT renderer node/edge strings (closes #212) #213

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Rockachopa wants to merge 2 commits from fix/212-dependency-graph-quoting into main

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@@ -149,8 +149,8 @@ def to_dot(graph: dict) -> str:
"""Generate DOT format output."""
lines = ["digraph dependencies {"]
lines.append(" rankdir=LR;")
lines.append(" node [shape=box, style=filled, fillcolor="#1a1a2e", fontcolor="#e6edf3"];")
lines.append(" edge [color="#4a4a6a"];")
lines.append(' node [shape=box, style=filled, fillcolor="#1a1a2e", fontcolor="#e6edf3"];')
lines.append(' edge [color="#4a4a6a"];')
lines.append("")
for repo, data in sorted(graph.items()):