chore: adds dependabot.yml #1630

Job	Run time
Install on Node.js v18	14s
Install on Node.js v20	10s
Lint on Node.js v18	58s
Audit on Node.js v18	10s
Lint on Node.js v20	53s
Test (Integration) on Node.js v18	22m 30s
Audit on Node.js v20	16s
Test (Integration) on Node.js v20	21m 8s
Test (Unit) on Node.js v18	1m 27s
Test (Integration) on Node.js v18 with L3	19m 49s
Test (Unit) on Node.js v20	1m 8s
Test (Integration) on Node.js v20 with L3	19m 55s
Test (Integration) on Node.js v18 with L3 with custom gas token (16 decimals)	21m 12s
Test (Integration) on Node.js v20 with L3 with custom gas token (16 decimals)	20m 1s
Test (Integration) on Node.js v18 with L3 with custom gas token (18 decimals)	19m 58s
Test (Integration) on Node.js v20 with L3 with custom gas token (18 decimals)	19m 55s
Test (Integration) on Node.js v18 with L3 with custom gas token (20 decimals)	21m 11s
Test (Integration) on Node.js v20 with L3 with custom gas token (20 decimals)	19m 53s
	3h 30m 48s

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