chore: release bump patch only

[weboko]

Follow up to release-please config to bump only patch.

Solution is to use valid property which is not well documented - googleapis/release-please@8a7bfc1#diff-545bcd69c10300cbce0642d6970d8ccbff666d1e2b70b048084d4c6ec8b1e3d7

Example of release PR: #1175
Previous PR to #1155

[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
Waku core	115.03 KB (0%)	2.4 s (0%)	2.7 s (-14.89% 🔽)	5 s
Waku default setup	386.85 KB (0%)	7.8 s (0%)	5.8 s (-14.2% 🔽)	13.5 s
ECIES encryption	27.88 KB (0%)	558 ms (0%)	1.8 s (+103.03% 🔺)	2.3 s
Symmetric encryption	27.88 KB (0%)	558 ms (0%)	1.8 s (+36.79% 🔺)	2.4 s
DNS discovery	108.8 KB (0%)	2.2 s (0%)	3 s (-2.15% 🔽)	5.2 s
Privacy preserving protocols	114.05 KB (0%)	2.3 s (0%)	2.7 s (+11.8% 🔺)	5 s
Light protocols	116.11 KB (0%)	2.4 s (0%)	3 s (+13.88% 🔺)	5.3 s
History retrieval protocols	115.95 KB (0%)	2.4 s (0%)	1.9 s (-14.81% 🔽)	4.2 s