chore(deps): update markdown-it to v15 for quadratic-complexity fixes

v15.0.1 fixes quadratic-complexity bugs in the linkify inline rule and
fuzzy-link replacement - relevant here since this app renders notes
with linkify: true. Also drops @types/markdown-it, which v15 makes
redundant by bundling its own TypeScript declarations (conflicting
otherwise), and adapts two call sites to the now-more-precise
attrGet() return type (string | number | null vs the community types'
string | null).

pnpm-lock.yaml

@@ -82,8 +82,8 @@ importers:
         specifier: ^0.577.0
         version: 0.577.0(svelte@5.57.0)
       markdown-it:
-        specifier: ^14.3.1
-        version: 14.3.1
+        specifier: ^15.0.1
+        version: 15.0.1
       nanoid:
         specifier: ^5.1.16
         version: 5.1.16
@@ -130,9 +130,6 @@ importers:
       '@types/better-sqlite3':
         specifier: ^7.6.13
         version: 7.6.13
-      '@types/markdown-it':
-        specifier: ^14.2.0
-        version: 14.2.0
       '@types/nodemailer':
         specifier: ^8.0.1
         version: 8.0.1
@@ -1887,6 +1884,9 @@ packages:
   argparse@2.0.1:
     resolution: {integrity: sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==}
 
+  argparse@3.0.1:
+    resolution: {integrity: sha512-nM4mHF/KM1v59ZNKX7zfusQz5wUAxR511YG8Vo6TyiV4aqhu++rbJW4v04xsWhpSsHFj66flT8P7znVpyO20xQ==}
+
   aria-query@5.3.1:
     resolution: {integrity: sha512-Z/ZeOgVl7bcSYZ/u/rh0fOpvEpq//LZmdbkXyc7syVzjPAhfOa9ebsdTSjEBDU4vs5nC98Kfduj1uFo0qyET3g==}
     engines: {node: '>= 0.4'}
@@ -3046,6 +3046,9 @@ packages:
   linkify-it@5.0.2:
     resolution: {integrity: sha512-ONTm2jCMAVZjgQa/Fy1kScXsuOoF5NPTsoFBdE1KVIZ2vAh/r9+Bqo+0jINCBYnavTPQZz38QzFTme79ENoN3Q==}
 
+  linkify-it@6.1.0:
+    resolution: {integrity: sha512-wJ/TwpSDTLepCrQoYWYIExIKg5Zchex2Nn5yk2mFnB+6PtdkHtyLx742md9csRjjOnGkKIS/RrbY7l8D6gT9Vw==}
+
   linkifyjs@4.3.3:
     resolution: {integrity: sha512-P8aEP5U/D1/IlTY2OeYsErdwh9bGuLE30NcXtKEjgdHcahveQoQwM2yZNsioQHsWFz0P7KKudisbrzCgR0sDHg==}
 
@@ -3108,6 +3111,10 @@ packages:
     resolution: {integrity: sha512-4Ej49aYTDFIQ+uBkfX8GBvJGccoARxxPep+7aWTs55ozbjQJpW9M26Fe53vnGgvLeVzva/amzjQQaQu9w0vMhA==}
     hasBin: true
 
+  markdown-it@15.0.1:
+    resolution: {integrity: sha512-9/7gE95FNPkfUWrjJIoHZza2iLmuJlPD0UNMxPi7bxUrbCR525YZY0r+zyfes0dZI5ZZ/uNIXUJca0pJvtw41g==}
+    hasBin: true
+
   math-intrinsics@1.1.0:
     resolution: {integrity: sha512-/IXtbwEk5HTPyEwyKX6hGkYXxM9nbj64B+ilVJnC/R6B0pH5G4V3b0pVbL7DBj4tkhBAppbQUlf6F6Xl9LHu1g==}
     engines: {node: '>= 0.4'}
@@ -3910,6 +3917,9 @@ packages:
   uc.micro@2.1.0:
     resolution: {integrity: sha512-ARDJmphmdvUk6Glw7y9DQ2bFkKBHwQHLi2lsaH6PPmz/Ka9sFOBsBluozhDltWmnv9u/cF6Rt87znRTPV+yp/A==}
 
+  uc.micro@3.0.0:
+    resolution: {integrity: sha512-U3PppEkleoTnIfi8BozMx3yju3qc/L6SwqWo2Sw+54PX+PX0q9I+r1Um5HCmqD7n9VDX5/v3vQH/AjA6deDdtw==}
+
   unbox-primitive@1.1.0:
     resolution: {integrity: sha512-nWJ91DjeOkej/TA8pXQ3myruKpKEYgqvpw9lz4OPHj/NWFNluYrjbz9j01CJ8yKQd2g4jFoOkINCTW2I5LEEyw==}
     engines: {node: '>= 0.4'}
@@ -5897,6 +5907,8 @@ snapshots:
 
   argparse@2.0.1: {}
 
+  argparse@3.0.1: {}
+
   aria-query@5.3.1: {}
 
   array-buffer-byte-length@1.0.2:
@@ -7089,6 +7101,10 @@ snapshots:
     dependencies:
       uc.micro: 2.1.0
 
+  linkify-it@6.1.0:
+    dependencies:
+      uc.micro: 3.0.0
+
   linkifyjs@4.3.3: {}
 
   locate-character@3.0.0: {}
@@ -7150,6 +7166,15 @@ snapshots:
       punycode.js: 2.3.1
       uc.micro: 2.1.0
 
+  markdown-it@15.0.1:
+    dependencies:
+      argparse: 3.0.1
+      entities: 8.0.0
+      linkify-it: 6.1.0
+      mdurl: 2.1.0
+      punycode.js: 2.3.1
+      uc.micro: 3.0.0
+
   math-intrinsics@1.1.0: {}
 
   mdn-data@2.27.1: {}
@@ -8101,6 +8126,8 @@ snapshots:
 
   uc.micro@2.1.0: {}
 
+  uc.micro@3.0.0: {}
+
   unbox-primitive@1.1.0:
     dependencies:
       call-bound: 1.0.4