fix(dict): Don't correct wasn't

Pulled a contraction list from https://editorsmanual.com/articles/contractions-list/

crates/typos-dict/assets/allowed.csv

@@ -28,3 +28,25 @@ healthz,common name for health check endpoints
 readd,as in re-add but as an identifier
 unices,alt plural of unixes
 alloced,past tense of common programming abbreviation alloc
+aren,so contractions work
+couldn,so contractions work
+didn,so contractions work
+don,so contractions work
+hadn,so contractions work
+hasn,so contractions work
+haven,so contractions work
+isn,so contractions work
+ll,so contractions work
+ma,so contractions work
+mightn,so contractions work
+mustn,so contractions work
+needn,so contractions work
+oughtn,so contractions work
+re,so contractions work
+shan,so contractions work
+shouldn,so contractions work
+ve,so contractions work
+wasn,so contractions work
+weren,so contractions work
+won,so contractions work
+wouldn,so contractions work

crates/typos-dict/assets/words.csv

@@ -70871,7 +70871,6 @@ warumup,warmup
 warwcik,warwick
 washignton,washington
 washingtion,washington
-wasn,wasm
 wass,was
 wastefull,wasteful,wastefully
 wastefullness,wastefulness

crates/typos-dict/benches/benches/aho_corasick_codegen.rs

@@ -70883,7 +70883,6 @@ impl Word {
             b"warwcik",
             b"washignton",
             b"washingtion",
-            b"wasn",
             b"wass",
             b"wastefull",
             b"wastefullness",
@@ -142944,7 +142943,6 @@ impl Word {
             &["warwick"],
             &["washington"],
             &["washington"],
-            &["wasm"],
             &["was"],
             &["wasteful", "wastefully"],
             &["wastefulness"],