test: include Sentry changes in hash keys

[armcknight]

Previously, test apps that link in compiled Sentry sources weren't getting rebuilt even if the sentry sources changed.

#skip-changelog

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1191.54 ms	1235.78 ms	44.24 ms
Size	20.75 KiB	374.73 KiB	353.97 KiB

Baseline results on branch: master

Startup times

Revision	Plain	With Sentry	Diff
604586a	1216.06 ms	1249.10 ms	33.04 ms
d73ebd0	1200.83 ms	1236.10 ms	35.27 ms
8607e67	1255.80 ms	1259.50 ms	3.70 ms
075911d	1256.73 ms	1271.22 ms	14.49 ms
cd8dad3	1227.90 ms	1240.56 ms	12.66 ms
f444dc4	1242.55 ms	1248.82 ms	6.27 ms
0e2e593	1234.78 ms	1266.10 ms	31.32 ms
e43ce74	1235.77 ms	1252.06 ms	16.29 ms
8607e67	1213.53 ms	1238.20 ms	24.67 ms
ee127f4	1203.49 ms	1231.28 ms	27.79 ms

App size

Revision	Plain	With Sentry	Diff
604586a	20.51 KiB	333.15 KiB	312.65 KiB
d73ebd0	20.50 KiB	365.18 KiB	344.68 KiB
8607e67	20.50 KiB	338.99 KiB	318.49 KiB
075911d	20.51 KiB	332.90 KiB	312.39 KiB
cd8dad3	20.75 KiB	374.17 KiB	353.41 KiB
f444dc4	20.75 KiB	367.00 KiB	346.25 KiB
0e2e593	20.50 KiB	333.88 KiB	313.38 KiB
e43ce74	20.51 KiB	335.49 KiB	314.99 KiB
8607e67	20.50 KiB	338.99 KiB	318.49 KiB
ee127f4	20.51 KiB	333.10 KiB	312.59 KiB

[philipphofmann]

Thanks, @armcknight.