Update dependency org.jetbrains:annotations to v26 (#562)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

gradle/libs.versions.toml

@@ -66,7 +66,7 @@ gson = "com.google.code.gson:gson:2.11.0"
 pf4j = "org.pf4j:pf4j:3.12.0"
 fastutil = "it.unimi.dsi:fastutil:8.5.14"
 caffeine = "com.github.ben-manes.caffeine:caffeine:3.1.8"
-jetbrains-annotations = "org.jetbrains:annotations:25.0.0"
+jetbrains-annotations = "org.jetbrains:annotations:26.0.0"
 classtransform-mixinstranslator = { module = "net.lenni0451.classtransform:mixinstranslator", version.ref = "classtransform" }
 classtransform-mixinsdummy = { module = "net.lenni0451.classtransform:mixinsdummy", version.ref = "classtransform" }
 classtransform-additionalclassprovider = { module = "net.lenni0451.classtransform:additionalclassprovider", version.ref = "classtransform" }